| Question | Options | Answer |
|---|---|---|
| SSS TWO CHEMISTRY Hydrocarbons are compounds made up of: |
A) Carbon and oxygen B) Hydrogen and oxygen C) Carbon and hydrogen D) Nitrogen and hydrogen |
optionC |
| Which of the following is a hydrocarbon? |
A) CH3OH B) C2H6 C) NaCl D) H2SO4 |
optionB |
| Hydrocarbons are mainly classified into: |
A) Ionic and covalent B) Saturated and unsaturated C) Acidic and basic D) Soluble and insoluble |
optionB |
| Which hydrocarbon contains only single bonds? |
A) Alkene B) Alkyne C) Alkane D) Aromatic compound |
optionC |
| The simplest hydrocarbon is: |
A) Ethane B) Methane C) Propane D) Ethene |
optionB |
| The general formula of alkanes is: |
A) CnH{2n} B) CnH{2n+2} C) CnH{2n-2} D) CnHn |
optionB |
| Alkanes are also called: |
A) Olefins B) Paraffins C) Acetylenes D) Alcohols |
optionB |
| Which of the following is an alkane? |
A) Ethene B) Ethyne C) Ethane D) Benzene |
optionC |
| The first member of the alkane series is: |
A) Methane B) Ethane C) Propane D) Butane |
optionA |
| The molecular formula of propane is: |
A) CH4 B) C2H6 C) C3H8 D) C4H{10} |
optionC |
| Which alkane has four carbon atoms? |
A) Methane B) Ethane C) Propane D) Butane |
optionD |
| Alkanes generally undergo: |
A) Addition reactions B) Substitution reactions C) Neutralization reactions D) Polymerization only |
optionB |
| The source of many hydrocarbons is: |
A) Water B) Petroleum C) Air D) Salt |
optionB |
| Which of the following is an unsaturated hydrocarbon? |
A) Methane B) Ethane C) Ethene D) Propane |
optionC |
| The general formula of alkenes is: |
A) CnH{2n+2} B) CnH{2n} C) CnH{2n-2} D) CnHn |
optionB |
| Alkenes contain at least one: |
A) Single bond B) Double bond C) Triple bond D) Ionic bond |
optionB |
| The first member of the alkene series is: |
A) Methene B) Ethene C) Propene D) Butene |
optionB |
| Which of the following is an alkene? |
A) C2H6 B) C3H8 C) C2H4 D) CH4 |
optionC |
| Alkenes are called unsaturated hydrocarbons because they: |
A) Contain oxygen B) Have only single bonds C) Contain a double bond D) Contain nitrogen |
optionC |
| A common test for alkenes is decolorization of: |
A) Limewater B) Bromine water C) Silver nitrate D) Universal indicator |
optionB |
| The general formula of alkynes is: |
A) CnH{2n+2} B) CnH{2n} C) CnH{2n-2} D) CnHn |
optionC |
| Alkynes contain at least one: |
A) Single bond B) Double bond C) Triple bond D) Metallic bond |
optionC |
| The first member of the alkyne series is: |
A) Ethyne B) Ethene C) Methyne D) Propyne |
optionA |
| The molecular formula of ethyne is: |
A) C2H2 B) C2H4 C) C2H6 D) C3H4 |
optionA |
| Alkynes are also called: |
A) Olefins B) Paraffins C) Acetylenes D) Aromatics |
optionC |
| Which of the following is an alkyne? |
A) Ethane B) Ethene C) Ethyne D) Methane |
optionC |
| Ethyne is commonly used in: |
A) Respiration B) Oxy-acetylene welding C) Making soap D) Water purification |
optionB |
| The IUPAC name of CH3CH2CH3 is: |
A) Methane B) Ethane C) Propane D) Butane |
optionC |
| The IUPAC name of CH2=CH2 is: |
A) Ethane B) Ethene C) Ethyne D) Methene |
optionB |
| The IUPAC name of CH CH is: |
A) Ethane B) Ethene C) Ethyne D) Methyne |
optionC |
| The prefix used for two carbon atoms is: |
A) Meth- B) Eth- C) Prop- D) But- |
optionB |
| The prefix used for three carbon atoms is: |
A) Eth- B) Meth- C) Prop- D) Pent- |
optionC |
| The suffix used for alkanes is: |
A) -ene B) -yne C) -ane D) -ol |
C |
| The suffix used for alkenes is: |
A) -ane B) -ene C) -yne D) -oic |
optionB |
| The suffix used for alkynes is: |
A) -ane B) -ene C) -yne D) -ol |
optionC |
| Which reaction is typical of alkenes and alkynes? |
A) Addition B) Neutralization C) Precipitation D) Displacement |
optionA |
| Which hydrocarbon is most reactive? |
A) Alkane B) Alkene C) Alkyne D) All are equally reactive |
optionC |
| The laboratory preparation of methane is commonly from the heating of: |
A) Sodium acetate with soda lime B) Ethanol C) Calcium carbide D) Sodium hydroxide and chlorine |
optionA |
| Ethene can be prepared in the laboratory by heating: |
A) Ethanol with concentrated sulfuric acid B) Methane with chlorine C) Calcium carbonate D) Sodium chloride solution |
optionA |
| Ethyne is commonly prepared in the laboratory by reacting calcium carbide with: |
A) Water B) Alcohol C) Acid D) Sodium hydroxide |
optionA |
| The laboratory preparation of alkanes from sodium salts of carboxylic acids and soda lime is called: |
A) Fermentation B) Decarboxylation C) Hydration D) Oxidation |
optionB |
| Alkenes are commonly prepared by: |
A) Hydrogenation B) Dehydration of alcohols C) Neutralization D) Hydration of alkanes |
optionB |
| Which of the following is a use of methane? |
A) Welding metal B) Fuel C) Making plastic only D) Coloring fabrics |
optionB |
| Which of the following is a use of ethene? |
A) Ripening fruits B) Making table salt C) Germinating seeds D) Preserving metal |
optionA |
| Ethyne is used in: |
A) Lighting and welding B) Water softening C) Fertilizer production only D) Soap manufacture |
optionA |
| The IUPAC name of CH3CH2CH2CH3 is: |
A) Butane B) Propane C) Ethane D) Pentane |
optionA |
| The IUPAC name of CH3CH=CH2 is: |
A) Propane B) Propene C) Propyne D) Ethene |
optionB |
| The IUPAC name of CH3C CH is: |
A) Propyne B) Propene C) Propane D) Butyne |
optionA |
| The bond angle in alkanes is approximately: |
A) 90° B) 109.5° C) 120° D) 180° |
optionB |
| The bond angle in alkenes is approximately: |
A) 90° B) 109.5° C) 120° D) 180° |
optionC |
| The bond angle in alkynes is approximately: |
A) 90° B) 109.5° C) 120° D) 180° |
optionD |
| Which compound is used in the production of polythene? |
A) Ethane B) Ethene C) Ethyne D) Methane |
optionB |
| A compound with the formula C5H{12} is: |
A) Pentane B) Pentene C) Pentyne D) Butane |
optionA |
| A compound with the formula C4H8 could be: |
A) Butane B) Butene C) Butyne D) Methane |
optionB |
| A compound with the formula C3H4 could be: |
A) Propane B) Propene C) Propyne D) Butane |
optionC |
| Which hydrocarbon series is most used as fuel in candles and cooking gas? |
A) Alkanes B) Alkenes C) Alkynes D) Arenes |
optionA |
| The process of breaking large hydrocarbon molecules into smaller ones is called: |
A) Cracking B) Distillation C) Fermentation D) Neutralization |
optionA |
| Cracking is mainly done to produce: |
A) Salt and water B) Smaller alkanes and alkenes C) Acids only D) Alcohols only |
optionB |
| Petrol, diesel, and kerosene are obtained from crude oil by: |
A) Filtration B) Fractional distillation C) Crystallization D) Sublimation |
optionB |
| Hydrocarbons generally burn with: |
A) Blue flame only B) Clean flame always C) Sooty flame sometimes D) No flame |
optionC |
| Alkanols are organic compounds that contain the functional group: |
A) -COOH B) -CHO C) -OH D) -NH2 |
optionC |
| Alkanols are also called: |
A) Alcohols B) Aldehydes C) Ketones D) Esters |
optionA |
| The IUPAC name of CH3OH is: |
A) Methanol B) Ethanol C) Propanol D) Butanol |
optionA |
| The IUPAC name of C2H5OH is: |
A) Methanol B) Ethanol C) Propanol D) Butanol |
optionB |
| The functional group in ethanol is: |
A) -CH3 B) -OH C) -COOH D) -NH2 |
optionB |
| The general formula of monohydric alkanols is: |
A) CnH{2n+2}O B) CnH{2n} C) CnH{2n-2} D) CnHnO2 |
optionA |
| Alkanols are generally: |
A) Ionic compounds B) Covalent compounds C) Metallic compounds D) Salt compounds |
optionB |
| Lower alkanols are usually: |
A) Insoluble in water B) Soluble in water C) Very dense D) Black in color |
optionB |
| The boiling points of alkanols are generally higher than those of alkanes of similar molecular mass because of: |
A) Metallic bonding B) Hydrogen bonding C) Ionic bonding D) Van der Waals only |
optionB |
| Which of the following is a physical property of ethanol? |
A) It is a colorless liquid B) It is a black solid C) It is a yellow gas D) It is magnetic |
optionA |
| Methanol and ethanol are both: |
A) Alkanoic acids B) Alkanols C) Alkenes D) Alkanes |
optionB |
| The laboratory preparation of ethanol can be achieved by: |
A) Fermentation of sugar B) Heating calcium carbide C) Cracking of petroleum D) Burning methane |
optionA |
| Industrial production of ethanol is commonly by: |
A) Hydration of ethene B) Heating sodium acetate C) Reaction of calcium carbide with water D) Distillation of water |
optionA |
| Ethanol produced by fermentation is usually purified by: |
A) Filtration only B) Fractional distillation C) Sublimation D) Precipitation |
optionB |
| A common raw material for fermentation is: |
A) Sugar solution B) Sand C) Copper sulfate D) Calcium carbonate |
optionA |
| Fermentation of sugar to ethanol requires: |
A) Sodium chloride B) Yeast C) Limewater D) Oxygen only |
optionB |
| The chemical reaction of ethanol with sodium produces: |
A) Sodium ethanoate and hydrogen B) Sodium ethoxide and hydrogen C) Ethene and sodium hydroxide D) Methane and water |
optionB |
| When ethanol is oxidized, it first forms: |
A) Methanoic acid B) Ethanoic acid C) Propanoic acid D) Butanoic acid |
optionB |
| Ethanoic acid is formed by oxidation of: |
A) Methanol B) Ethanol C) Propanol D) Butanol |
optionB |
| Alkanols burn in air to produce: |
A) Carbon dioxide and water B) Carbon monoxide and salt C) Nitrogen and oxygen D) Hydrogen and oxygen |
optionA |
| Methanol is widely used as: |
A) Fuel and solvent B) Fertilizer C) Cooking salt D) Soap only |
optionA |
| Ethanol is used in: |
A) Antiseptics and beverages B) Making limestone C) Rusting iron D) Water softening |
optionA |
| One major use of propan-2-ol is as a: |
A) Solvent and disinfectant B) Fuel in welding C) Food preservative D) Fertilizer |
A |
| The IUPAC name of CH3CH2CH2OH is: |
A) Propan-1-ol B) Propan-2-ol C) Ethanol D) Methanol |
A |
| The IUPAC name of CH3CH(OH)CH3 is: |
A) Propan-1-ol B) Propan-2-ol C) Ethanol D) Butan-1-ol |
optionB |
| The IUPAC name of CH3CH2CH2CH2OH is: |
A) Butan-1-ol B) Butan-2-ol C) Propan-1-ol D) Methanol |
optionA |
| The suffix used in naming alkanols is: |
A) -ane B) -ene C) -ol D) -oic acid |
optiionC |
| Which of the following is a primary alcohol? |
A) Propan-2-ol B) Butan-2-ol C) Ethanol D) tert-Butanol |
optionC |
| Which of the following is a secondary alcohol? |
A) Ethanol B) Propan-1-ol C) Propan-2-ol D) Methanol |
C |
| Strong oxidation of ethanol produces: |
A) Ethene B) Ethanoic acid C) Methane D) Propene |
optionB |
| Dehydration of ethanol produces: |
A) Ethene B) Ethane C) Ethyne D) Ethanoic acid |
optionA |
| A reagent used in dehydration of ethanol in the laboratory is: |
A) Concentrated tetraoxosulphate (VI) acid B) Sodium hydroxide C) Limewater D) Silver trioxinitrate V |
optionA |
| Alkanols are neutral to: |
A) Litmus B) Water only C) Salt solution only D) Metals only |
optionA |
| The lower members of alkanols are: |
A) Gases B) Liquids C) Solids only D) Plasma |
optionB |
| One use of ethanol in medicine is as a: |
A) Antiseptic B) Fertilizer C) Detergent D) Dye |
optionA |
| Industrial ethanol is often prepared from ethene by: |
A) Hydration B) Oxidation C) Hydrolysis of salts D) Cracking |
optionA |
| The process of making alcohol from sugars using microorganisms is called: |
A) Fermentation B) Polymerization C) Distillation D) Crystallization |
optionA |
| Which alcohol is poisonous if consumed? |
A) Methanol B) Ethanol C) Propanol D) Butanol |
optionA |
| The functional group of alkanols can also be written as: |
A) COOH B) OH C) CHO D) COO |
optionB |
| Which of the following is used as a fuel in spirit lamps? |
A) Methanol or ethanol B) Benzene C) Ethyne D) Phenol |
optionA |
| Benzene belongs to the class of compounds called: |
A) Alkanes B) Alkenes C) Arenes D) Alkynes |
C |
| The molecular formula of benzene is: |
A) C6H6 B) C6H12 C) C6H14 D) C5H6 |
optionA |
| Benzene is: |
A) An aliphatic hydrocarbon B) An aromatic hydrocarbon C) A carboxylic acid D) An alcohol |
optionB |
| Benzene is characterized by: |
A) A ring of six carbon atoms B) A triple bond chain C) Only one carbon atom D) A hydroxyl group |
optionA |
| Benzene is often obtained from: |
A) Coal tar and petroleum B) Water C) Salt solution D) Lime |
optionA |
| Benzene is commonly used in the manufacture of: |
A) Dyes, plastics, and detergents B) Table salt C) Glass only D) Soap bubbles only |
optionA |
| The structure of benzene was proposed by: |
A) Dalton B) Kekulé C) Mendeleev D) Boyle |
optionB |
| Benzene is more likely to undergo: |
A) Substitution reactions B) Neutralization reactions C) Hydrolysis only D) Double decomposition |
optionA |
| Benzene burns with a: |
A) Clean flame only B) Sooty flame C) No flame D) Green flame |
optionB |
| Phenol contains the functional group: |
A) OH attached to an aromatic ring B) COOH C) CHO D) NH2 |
optionA |
| Phenol is also known as: |
A) Carbolic acid B) Acetic acid C) Methanol D) Benzene alcohol |
optionA |
| Phenol is used in the manufacture of: |
A) Disinfectants and plastics B) Cooking gas C) Fertilizers only D) Candles only |
optionA |
| Phenol is used medically as a: |
A) Disinfectant B) Fuel C) Food additive D) Catalyst only |
optionA |
| Phenol is: |
A) Less acidic than water B) Slightly acidic C) Strongly basic D) Neutral and inert |
optionB |
| A common use of benzene is in the production of: |
A) Nylon and synthetic fibers B) Limewater C) Rust D) Chlorine gas |
optionA |
| Benzene is an example of a: |
A) Saturated hydrocarbon B) Aromatic hydrocarbon C) Alcohol D) Ester |
optionB |
| The presence of a benzene ring makes a compound: |
A) Aromatic B) Metallic C) Ionic D) Salty |
optionA |
| Phenol reacts with sodium hydroxide to form: |
A) Sodium phenoxide B) Sodium ethanoate C) Sodium chloride D) Sodium acetate |
optionA |
| Phenol can be distinguished from alcohol by its reaction with: |
A) Sodium hydroxide B) Water C) Oxygen D) Nitrogen |
optionA |
| One use of phenol is in the production of: |
A) Bakelite B) Limestone C) Glass D) Bleaching powder only |
optionA |
| Alkanoic acids are organic compounds containing the group: |
A) OH B) COOH C) CHO D) NH2 |
optionB |
| Alkanoic acids are also called: |
A) Carboxylic acids B) Alcohols C) Ketones D) Ethers |
optionA |
| The simplest alkanoic acid is: |
A) Ethanoic acid B) Methanoic acid C) Propanoic acid D) Butanoic acid |
optionB |
| The molecular formula of methanoic acid is: |
A) CH3COOH B) HCOOH C) C2H5OH D) CH3OH |
optionB |
| The molecular formula of ethanoic acid is: |
A) CH3COOH B) HCOOH C) CH3CH2OH D) C2H6 |
optionA |
| Ethanoic acid is also known as: |
A) Vinegar acid B) Sulfuric acid C) Carbonic acid D) Nitric acid |
optionA |
| The suffix used for alkanoic acids is: |
A) -ol B) -ene C) -oic acid D) -yne |
optionC |
| The IUPAC name of CH3CH2COOH is |
A) Ethanoic acid B) Propanoic acid C) Butanoic acid D) Methanoic acid |
optionB |
| The IUPAC name of CH3CH2CH2COOH is |
A) Propanoic acid B) Butanoic acid C) Pentanoic acid D) Methanoic acid |
optionB |
| Carboxylic acids are generally |
A) Neutral B) Acidic C) Basic D) Metallic |
optionB |
| A. -OH |
A) -OH B) -COOH C) -CHO D) -CO- |
optionB |
| The general formula of alkanoic acids is |
A) CnH{2n+1}COOH B) CnH{2n+2} C) CnH{2n} D) CnH{2n-2} |
optionA |
| The IUPAC name of HCOOH is |
A) Ethanoic acid B) Methanoic acid C) Propanoic acid D) Butanoic acid |
optionB |
| The IUPAC name of CH3COOH is |
A) Methanoic acid B) Ethanoic acid C) Propanoic acid D) Butanoic acid |
optionB |
| The common name of ethanoic acid is |
A) Formic acid B) Acetic acid C) Lactic acid D) Citric acid |
optionB |
| Ethanoic acid can be prepared in the laboratory by oxidizing |
A) Ethanol B) Ethene C) Ethyne D) Ethane |
optionA |
| A suitable oxidizing agent for preparing ethanoic acid from ethanol is |
A) Sodium chloride solution B) Acidified potassium dichromate C) Limewater D) Ammonia solution |
optionB |
| Alkanoic acids turn blue litmus paper |
A) Blue B) Green C) Red D) Yellow |
optionC |
| Alkanoic acids react with active metals to produce |
A) Salt and oxygen B) Salt and hydrogen C) Alcohol and water D) Ester and hydrogen |
optionB |
| Ethanoic acid reacts with sodium hydroxide to form |
A) Sodium ethoxide and water B) Sodium ethanoate and water C) Sodium carbonate and water D) Sodium chloride and water |
optionB |
| Alkanoic acids react with carbonates to produce |
A) Salt, water, and carbon dioxide B) Salt and hydrogen only C) Alcohol and oxygen D) Ester and ammonia |
optionA |
| The reaction between an alkanoic acid and an alkanol is called |
A) Fermentation B) Esterification C) Cracking D) Polymerization |
optionB |
| Ethanoic acid reacts with ethanol to form |
A) Ethyl ethanoate and water B) Sodium ethanoate and water C) Ethene and water D) Methane and carbon dioxide |
optionA |
| The suffix used in naming alkanoic acids is |
A) -ol B) -al C) -oic acid D) -one |
optionC |
| A common use of ethanoic acid is in the production of |
A) Vinegar B) Cement C) Oxygen D) Limestone |
optionA |
| Hydrocarbons are compounds containing only |
A) Carbon and oxygen B) Carbon and hydrogen C) Hydrogen and oxygen D) Carbon and nitrogen |
optionB |
| The empirical formula of a compound shows |
A) The exact number of atoms in a molecule B) The simplest whole-number ratio of atoms C) The arrangement of atoms only D) The physical state of the compound |
optionB |
| The molecular formula shows |
A) The simplest ratio of atoms only B) The actual number of atoms in a molecule C) Only the type of bond D) Only the functional group |
optionB |
| The structural formula shows |
A) The arrangement of atoms and bonds in a molecule B) Only the percentage composition C) Only the empirical ratio D) Only the molar mass |
optionA |
| The empirical formula of C2H6 is |
A) C2H6 B) CH3 C) CH4 D) C3H8 |
optionB |
| The empirical formula of C6H6 is |
A) C6H6 B) CH C) C3H3 D) C2H2 |
optionB |
| The empirical formula of C4H{10} is |
A) C4H{10} B) C2H5 C) CH5 D) C3H8 |
optionB |
| A hydrocarbon has empirical formula CH2 and relative molecular mass 56. What is its molecular formula? |
A) C2H4 B) C3H6 C) C4H8 D) C5H{10} |
optionC |
| A hydrocarbon has empirical formula CH and relative molecular mass 78. What is its molecular formula? |
A) C2H2 B) C4H4 C) C6H6 D) C8H8 |
optionC |
| A hydrocarbon contains 85.7% carbon and 14.3% hydrogen by mass. What is its empirical formula? |
A) CH B) CH2 C) CH3 D) C2H5 |
optionB |
| A hydrocarbon contains 80% carbon and 20% hydrogen by mass. What is its empirical formula? |
A) CH4 B) CH3 C) C2H6 D) CH2 |
optionB |
| A hydrocarbon has empirical formula CH3 and relative molecular mass 30. What is its molecular formula. |
A) CH3 B) C2H6 C) C3H9 D) C4H{12} |
optionB |
| The relative formula mass of empirical formula CH2 is |
A) 12 B) 13 C) 14 D) 16 |
optionC |
| If the empirical formula mass of a compound is 13 and its molecular mass is 26, the value of n is |
A) 1 B) 2 C) 3 D) 4 |
optionB |
| Which of the following is the structural formula of ethane? |
A) CH2=CH2 B) CH3-CH3 C) CH=CH D) CH3OH |
optionB |
| SSS ONE CHEMISTRY Water is a |
A) compound B) mixture C) element D) solution |
optionA |
| The chemical formula of water is |
A) H2O2 B) H2O C) HO2 D) H3O |
optionB |
| Hard water contains dissolved |
A) oxygen and nitrogen B) calcium and magnesium salts C) sodium chloride only D) carbon dioxide only |
optionB |
| Temporary hardness of water is caused by |
A) calcium bicarbonate B) sodium chloride C) iron filings D) sugar |
optionA |
| Permanent hardness of water is caused by |
A) calcium hydrogen carbonate B) magnesium sulphate C) sodium hydroxide D) potassium nitrate |
optionB |
| Hard water can be softened by |
A) filtration B) boiling only in all cases C) adding detergent D) adding more salt |
optionA |
| Temporary hardness can be removed by |
A) boiling B) freezing C) evaporation D) condensation |
optionA |
| A solution is a |
A) heterogeneous mixture B) pure substance C) homogeneous mixture D) suspension only |
optionC |
| The solute in a solution is the substance that |
A) dissolves the solvent B) is present in smaller amount and dissolves C) is always water D) is insoluble |
optionB |
| The solvent in most laboratory solutions is usually |
A) oxygen B) water C) salt D) sugar |
optionB |
| A suspension is a mixture in which particles are |
A) too small to settle B) completely dissolved C) large enough to settle on standing D) invisible under all microscopes |
optionC |
| A colloid is a mixture with particle size |
A) smaller than in solution B) between solution and suspension C) larger than suspension D) equal to pure substances |
optionB |
| Which of the following is a colloid? |
A) salt solution B) muddy water C) milk D) pure water |
optionC |
| Which of the following is a suspension? |
A) blood B) muddy water C) vinegar D) air |
optionB |
| The Tyndall effect is shown by |
A) solutions only B) suspensions only C) colloids only D) pure water only |
optionC |
| A solution that contains the maximum amount of solute at a given temperature is |
A) dilute B) unsaturated C) saturated D) supersaturated always |
optionC |
| Solubility is the amount of solute that dissolves in |
A) 100g of solvent at a given temperature B) 10g of solvent at room temperature C) 1g of water only D) any volume of solution |
optionA |
| If 20g of NaCl dissolves in 100g of water at 25°C, the solution is |
A) unsaturated if solubility is 36g B) saturated if solubility is 10g C) a suspension D) a colloid |
optionA |
| The process of forming a solution is called |
A) filtration B) dissolution C) distillation D) precipitation |
optionB |
| Which method separates sand from water? |
A) crystallization B) filtration C) evaporation D) chromatography |
optionB |
| Which method is best for obtaining salt from salt solution? |
A) filtration B) decantation C) evaporation D) sieving |
optionC |
| A substance that dissolves in water is said to be |
A) insoluble B) soluble C) immiscible D) saturated |
optionB |
| Increasing temperature generally increases the solubility of |
A) most solids in water B) all gases in water C) all substances equally D) no substance |
optionA |
| The concentration of a solution is the amount of |
A) solvent only B) solute in a given amount of solution C) water in a solution only D) gas in air |
optionB |
| If 5g of solute is dissolved in 95g of water, the mass of the solution is |
A) 90g B) 95g C) 100g D) 105g |
optionC |
| Industrial chemistry deals with the |
A) study of animals B) large-scale production of chemicals C) structure of atoms only D) properties of metals only |
optionB |
| Heavy chemicals are generally produced in |
A) small quantities B) large quantities C) laboratories only D) homes |
optionB |
| Fine chemicals are usually produced in |
A) large bulk quantities B) very small quantities with high purity C) mines only D) oceans |
optionB |
| An example of a heavy chemical is |
A) hydrochloric acid B) sodium hydroxide C) perfumes D) vitamins |
optionB |
| An example of a fine chemical is |
A) sulfuric acid B) sodium chloride C) pharmaceutical drugs D) lime stone |
optionC |
| The Haber process is used to manufacture |
A) ammonia B) chlorine C) ethanol D) sodium carbonate |
optionA |
| The raw materials for the Haber process are |
A) nitrogen and hydrogen B) oxygen and carbon dioxide C) carbon and sulfur D) water and salt |
optionA |
| The contact process is used to manufacture |
A) nitric acid B) sulfuric acid C) hydrochloric acid D) acetic acid |
optionB |
| The main raw material for making sulfuric acid is |
A) sulfur dioxide B) nitrogen C) methane D) carbon monoxide |
optionA |
| The Ostwald process is used for making |
A) ammonia B) sulfuric acid C) nitric acid D) sodium hydroxide |
optionC |
| The chief alkali manufactured by the chlor-alkali process is |
A) potassium nitrate B) sodium hydroxide C) calcium carbonate D) ammonia |
optionB |
| In industrial chemistry, a catalyst is used to |
A) stop a reaction B) increase reaction rate C) reduce pressure only D) dissolve solids |
optionB |
| A major raw material in the manufacture of glass is |
A) limestone B) silica C) graphite D) sulfur |
optionB |
| Cement is mainly produced from |
A) limestone and clay B) sodium chloride and sand C) sulfur and water D) iron and zinc |
optionA |
| Heavy chemicals are often used in |
A) food coloring only B) large industries like fertilizer and acid production C) cosmetics only D) toys only |
optionB |
| A chemical of high purity used in medicine is a |
A) heavy chemical B) fine chemical C) alloy D) colloid |
optionB |
| The fertilizers industry is important because it supports |
A) textile production B) agriculture C) mining only D) rubber vulcanization |
optionB |
| A product of petroleum refining is |
A) ammonia B) kerosene C) oxygen D) lime |
optionB |
| Industrial chemistry helps in the production of |
A) paints and dyes B) medicines C) plastics D) all of the above |
optionD |
| An important use of sulfuric acid is in the manufacture of |
A) fertilizers B) glass only C) table sugar only D) oxygen gas |
optionA |
| Carbon is classified as a |
A) metal B) non-metal C) metalloid D) noble gas |
optionB |
| The atomic number of carbon is |
A) 4 B) 6 C) 8 D) 12 |
optionB |
| Carbon compounds are studied under |
A) organic chemistry B) nuclear chemistry C) physical chemistry D) analytical chemistry only |
optionA |
| An allotrope of carbon is |
A) sodium B) diamond C) water D) oxygen |
optionB |
| Which of the following is an allotrope of carbon? |
A) graphite B) iron C) salt D) ammonia |
optionA |
| Diamond is very hard because |
A) it contains metals B) each carbon atom forms four strong covalent bonds C) it contains water molecules D) it is a gas |
optionB |
| Graphite conducts electricity because it has |
A) free electrons B) free neutrons C) free protons D) no bonds |
optionA |
| Coke is obtained from |
A) wood B) coal C) limestone D) petroleum |
optionB |
| Coke is mainly used in |
A) cooking only B) steel manufacture C) making sugar D) water purification |
optionB |
| Producer gas is a mixture of |
A) hydrogen and oxygen B) carbon monoxide and nitrogen C) methane and chlorine D) carbon dioxide and oxygen |
optionB |
| Water gas is a mixture of |
A) carbon monoxide and hydrogen B) oxygen and hydrogen C) carbon dioxide and nitrogen D) methane and oxygen |
optionA |
| Producer gas is obtained by passing |
A) steam over hot iron B) air over red-hot coke C) carbon dioxide over water D) oxygen over coal |
optionB |
| Water gas is produced by passing steam over |
A) cold charcoal B) hot coke C) limestone D) salt |
optionB |
| The major component of air used in producer gas is |
A) argon B) nitrogen C) oxygen D) helium |
optionB |
| Carbon dioxide is removed from the atmosphere mainly by |
A) combustion B) photosynthesis C) respiration D) evaporation |
optionB |
| The carbon cycle involves the movement of carbon between |
A) rocks, water, air, and living things B) only animals and plants C) only soil and water D) only air and rocks |
optionA |
| Animals return carbon dioxide to the atmosphere by |
A) photosynthesis B) respiration C) filtration D) melting |
optionB |
| Burning of fossil fuels adds more |
A) oxygen B) carbon dioxide C) nitrogen D) hydrogen |
optionB |
| Which form of carbon is used in pencil leads? |
A) diamond B) graphite C) coke D) soot |
optionB |
| Charcoal is a form of |
A) pure metal B) amorphous carbon C) compound of carbon and hydrogen only D) salt |
optionB |
| Diamond is used in cutting tools because it is |
A) soft B) brittle and non-lustrous C) extremely hard D) a good conductor |
optionC |
| Carbon forms a large number of compounds because of |
A) low atomic number only B) catenation and tetravalency C) radioactivity D) metallic bonding |
optionB |
| Catenation means carbon atoms can |
A) form chains with themselves B) form ions only C) lose electrons easily D) react with water only |
optionA |
| The simplest organic compound is |
A) methane B) glucose C) ethanol D) benzene |
optionA |
| Carbon monoxide is a |
A) harmless gas B) poisonous gas C) noble gas D) liquid gas |
optionB |
| An atomic orbital is a region of high probability of finding |
A) a proton B) a neutron C) an electron D) a nucleus |
optionC |
| The s orbital has a shape that is |
A) dumbbell-shaped B) spherical C) tetrahedral D) planar |
optionB |
| The p orbitals are shaped like |
A) spheres B) dumbbells C) cubes D) rings |
optionB |
| There are how many p orbitals in a shell? |
A) 1 B) 2 C) 3 D) 4 |
optionC |
| The three p orbitals are usually designated as |
A) px, py, pz B) p1, p2, p3 C) sx, sy, sz D) dx, dy, dz |
optionA |
| The maximum number of electrons in one orbital is |
A) 1 B) 2 C) 6 D) 8 |
optionB |
| An orbital can contain at most two electrons with |
A) same spin B) opposite spins C) no spin D) any number of spins |
optionB |
| The d orbitals have a general shape that is |
A) spherical B) dumbbell only C) cloverleaf-like D) triangular |
optionC |
| The f orbitals are generally |
A) simple spheres B) more complex in shape C) always empty D) identical to s orbitals |
optionB |
| Orbitals are obtained from the solution of the |
A) mass equation B) wave equation C) gas law D) magnetic law |
optionB |
| A subshell consists of orbitals having the same |
A) principal quantum number only B) azimuthal quantum number only C) magnetic quantum number only D) spin quantum number only |
optionB |
| The s subshell contains |
A) 1 orbital B) 2 orbitals C) 3 orbitals D) 5 orbitals |
optionA |
| The p subshell contains |
A) 1 orbital B) 2 orbitals C) 3 orbitals D) 4 orbitals |
optionC |
| The d subshell contains |
A) 3 orbitals B) 5 orbitals C) 7 orbitals D) 10 orbitals |
optionB |
| The maximum number of electrons in the p subshell is |
A) 2 B) 4 C) 6 D) 8 |
optionC |
| The maximum number of electrons in the d subshell is |
A) 2 B) 6 C) 10 D) 14 |
optionC |
| The principal quantum number indicates the |
A) shape of orbital B) energy level or shell C) spin of electron D) direction of orbital |
optionB |
| The azimuthal quantum number determines the |
A) shell number B) shape of the orbital C) electron spin D) nuclear charge |
optionB |
| The magnetic quantum number determines the |
A) orientation of the orbital in space B) size of the nucleus C) type of element D) number of neutrons |
optionA |
| The spin quantum number refers to the |
A) rotation of the nucleus B) direction of electron spin C) number of orbitals D) shape of orbitals |
optionB |
| Electrons in the same orbital must have |
A) identical spins B) opposite spins C) no spin D) zero energy |
optionB |
| According to Hund's rule, electrons occupy orbitals singly before pairing in orbitals of equal energy. This helps to maximize |
A) mass B) stability C) density D) temperature |
optionB |
| The arrangement of electrons in orbitals is called |
A) atomic mass B) electronic configuration C) isotopic pattern D) chemical bonding |
optionB |
| For the 1s orbital, the maximum number of electrons is |
A) 1 B) 2 C) 6 D) 8 |
optionB |
| The p orbital begins from the |
A) first shell B) second shell C) third shell D) fourth shell |
optionB |
| Which orbital is lowest in energy in a given shell? |
A) s B) p C) d D) f |
optionA |
| The total number of orbitals in the second shell is |
A) 1 B) 3 C) 4 D) 5 |
optionC |
| The second shell contains the subshells |
A) s only B) p only C) s and p D) p and d |
optionC |
| The maximum number of electrons in the second shell is |
A) 2 B) 4 C) 8 D) 10 |
optionC |
| The shape of an orbital is related to the probability distribution of the |
A) nucleus B) neutron C) electron D) proton |
optionC |
| SSS 2 A hydrocarbon which contains the maximum number of hydrogen atoms for every carbon atom is said to be. |
A) Aliphatic B) Aromatic C) Saturated D) Unsaturated. |
optionC |
| Which of the following is unsaturated |
A) Hexane B) Benzene C) 2-methylpentane D) Cyclohexane |
optionB |
| The following are hydrocarbons except |
A) Pentane B) Pent-1- ene C) Pent-1-yne D) Pentan-1-ol |
optionD |
| CxHy + O2 3CO2 + 4H2O. from the reaction the hydrocarbon CxHy is |
A) An alkyne B) an alkene C) an alkane D) aromatic |
optionC |
| One of a hydrocarbon contains 8g of hydrocarbon. If the relative molecular mass is 92, the hydrocarbon is. (C= 12 H=1) |
A) aromatic B) an alkane C) an alkene D) an alkyne |
optionB |
| Which of the following hydrocarbons burns in air with a sooty flame? |
A) C3H8 B) C4H10 C) C5H12 D) C6H6 |
optionD |
| 2CxHy + 11O2 8CO2 +6H2O. The hydrocarbon , CxHy in the reaction is |
A) Cyclobutane B) butyne C) butene D) butane |
optionD |
| In which of the following methods can alkanes be prepared |
A) heating the ammonium salt of an alkanoic acid B) heating a haloalkane with alcoholic KOH C) heating the sodium salt of an alkanoic acid with sodalime D) heating an alkanol with excess conc. H2SO4 |
optionC |
| Heating of sodalime with CH3CH2CH2COONa produces |
A) propane B) butane C) pentane D) hexane |
optionA |
| The reaction between alkanes and the halogens is |
A) polymerization B) oxidation C) addition D) substitution |
optionD |
| The combustion of methane is represented by the stoichometric equation: CH4 + 2O2 CO2 + 2H2O. What amount of Oxygen will be required for the complete combustion of 5moles of methane? |
A) 10moles B) 5moles C) 3moles D) 1mole |
optionA |
| Which of the following reaction can be used to distinguish aliphatic from aromatic hydrocarbon |
A) action of bromine water B) action of heat C) action of ammoniacal Copper (I) chloride D) Treatment with conc. H2SO4 |
optionD |
| Which of the following statement is true about alkanes? |
A) They are all liquid B) their general molecular formula is CnH2n C) they are hydrocarbon D) they are very reactive compounds |
optionC |
| Which of the following compounds is not a product of the action of chlorine on methane in sunlight? |
A) CCl4 B) CHCl3 C) CH3CH2Cl D) CH3Cl. |
optionC |
| Most of the fatal explosions in coal mines are caused by |
A) ethane B) ethene C) ethyne D) methane |
optionD |
| The type of reaction that takes place between propene and a halogen is |
A) substitution B) addition C) elimination D) polymerization |
optionB |
| The product of the reaction between ethane and chlorine is |
A) 1,2-dichloroethane B) 1,1-dichloroethene C) 1,2-dicloroethene D) 1,1-dichloroethane |
optionaA |
| CH3CH2CH2OH -H2O CH3CH=CH3. The reagent that can be used to carry out the conversion is? |
A) ammoniacal silver trioxonitrate (V) B) hydrogen in the presence of nickel C) hot, concentrated H2SO4 D) alcoholic KOH |
optionB |
| Petroleum fractions produce ethane by |
A) reforming B) cracking C) distillation D) polymerization |
optionB |
| The reaction of but-1-ene with bromine gives |
A) 1, 1-dibromobutane B) 1, 2-dibromobutane C) 2, 2-dibromobutate D) 3, 4-dibromobutane |
optionB |
| Consider the reaction CH3CH2CH=CH2 CH3CH2-CH (OH)-CH2OH. The reagent used for this conversion is |
A) aqueous NH3 B) aqueous NaOH C) dilute H2SO4 D) acidified KMnO4 |
optionD |
| Propene undergoes mainly addition reactions because it is |
A) a covalent compound B) a hydrocarbon C) unsaturated D) a gas |
optionC |
| The compound used as “antifreeze” in car radiators in cold regions of the world is |
A) ethanol B) ethane-1, 2-diol C) ethanal D) propane-1, 2 –diol |
optionB |
| Catalytic hydrocarbon of alkenes produces |
A) arenes B) alkanes C) alkyne D) alkanals |
optionB |
| How many moles of Oxygen are required to burn one mole of C5H10 completely? |
A) 7.5 B) 7.0 C) 6.5 D) 6.0 |
optionA |
| The monometric unit of the natural rubber is |
A) butane B) but-1, 3-diene C) 2-methylbuta-1, 3-diene D) ethane |
optionC |
| One of the important uses of polyvinyl chloride (PVC) is the production of |
A) books B) pipes C) pencils D) ink |
optionB |
| The role of sulphur in vulcanization of rubber is to |
A) act as a catalyst B) break down rubber polymer C) increase the length of polymeric chain of rubber D) bind parallel long chains together |
optionD |
| The purpose of sulphur in vulcanization of rubber is mainly it. |
A) darker B) softer C) tougher D) more attractive |
optionC |
| A plastic material which cannot be softened by heat is said to be? |
A) Biodegradable B) ductile C) thermosetting D) thermoplastic |
optionC |
| The quality of natural rubber is improved by heating it with |
A) nickel catalyst B) chlorine C) hydrogen D) sulphur |
optionD |
| A constituent of the flame used by welders in cutting metals is? |
A) Ethane B) ethene C) propene D) ethyne |
optionD |
| Uncontrolled hydrogenation of ethyne yields |
A) ethane B) ethene C) propane D) benzene |
optionA |
| A compound that can give a precipitate on treatment with an aqueous ammoniac solution of copper(I) chloride is |
A) CH3C≡CCH3 B) HC≡C-CH2CH3 C) CH3CH=CHCH3 D) H2C=CH-CH2CH3 |
optionB |
| When a lump of calcium carbide is dropped into water in a container and the gas produced is passed through a jet of and then lighted, the flame produced is called an |
A) oxy-methane flame B) oxy-ethane flame C) oxy-ethene flame D) oxy-ethyne flame |
optionD |
| Consider the compound CH3-CH2-CH=CH-CH2-C≡CH. Acidic hydrogen is attached to carbon number. |
A) 1 B) 2 C) 3 D) 4 |
optionA |
| CH3CH2CH≡CH (liq NH_3)/Na → Z compound Z in the reaction, is |
A) CH3CH2-C=CNH2 B) CH3CH2C(H)=CHNH2 C) CH3CH2-C=CNa D) CH3CH2-C=CHNa |
optionC |
| What mass of bromine will be required to completely react with 2.7g of but-1-yne (C=12, H=1, Br= 80) |
A) 20g B) 16g C) 12g D) 8g |
optionA |
| A compound that reacts with sodium metal as well as ammoniacal silver(I) salt is |
A) CH3CH2CH3 B) CH3CH=CH2 C) CH3C≡CCH3 D) CH3C≡CH |
optionD |
| The final product of the reaction of propyne with hydrogen bromide is |
A) CH3-C(Br)=CH2 B) CH3CH=CH2 C) CH3C≡CCH3 D) CH3CH(Br)CH2Br |
optionD |
| The laboratory preparation of ethyne involves the action of water on |
A) calcium hydride B) calcium oxide C) calcium carbide D) calcium hydroxide |
optionC |
| The reaction involved in the decolourization of bromine water vapour by ethyne is |
A) polymerization B) elimination C) substitution D) addition |
optionD |
| A brown precipitate is given by when ammoniacal copper (I) chloride is treated with. |
A) HC≡ CCH2CH3 B) H2C=CHCH2CH3 C) CH3CH=CHOH D) CH3-CH2CH=O |
optionA |
| The reaction between ethyne and ammonical copper (I) chloride is |
A) addition B) substitution C) elimination D) polymerization |
optionB |
| The reaction between pent-2-yne and bromine is |
A) a substitution reaction B) a reduction reaction C) an addition reaction D) an elimination reaction |
optionC |
| What mass of bromine will saturate 3.3g of pent-3-ene-1-yne (C=12,H= 1, Br=80) |
A) 24g B) 32g C) 40g D) 48g |
optionC |
| Waste plastic materials pollute the environment because they are |
A) inflammable B) water-soluble C) non-biodegradable and thus accumulate in the soil D) are not reactive |
optionC |
| Which of the following compounds will its one mole require two moles of hydrogen gas for complete reaction? |
A) CH2=CH2 B) CH2CH=CHCH3 C) HC≡CCH2CH3 D) CH2=CH3 |
optionC |
| Hexane and benzene can both |
A) undergo addition reactions B) undergo substitution reaction C) undergo elimination reaction D) decolorize bromine water |
optionB |
| The laboratory preparation of ethyne involves the action of water on |
A) calcium hydride B) calcium oxide C) calcium carbide D) calcium hydroxide |
optionC |
| SSS ONE CHEMISTRY: .An element X has 127 neutrons and 82 Protons its atomic number is? |
A) 209 B) 105 C) 45 D) 82 |
optionD |
| When a bottle of coca – cola is opened, bubble of gas evolves. The gas is |
A) Hydrogen B) CO2 C) CO D) Sulphur |
optionB |
| The atomic number of element is determines by |
A) The number of protons in the element B) The number of neutrons in the element C) The number of electrons in the element D) The number of atoms in the element |
optionA |
| The atomic number of caesium is 55 and its atomic mass is 133. The nucleus of caesium atom contains? |
A) 78 protons and 55 electrons B) 55 protons and 78 neutrons C) 55 protons and 78 electrons D) 78 protons and 55 neutrons. |
optionB |
| Acid turns blue litmus paper __ |
A) Yellow B) colourless C) green D) red |
optionD |
| Acids are characterized by |
A) Bitter taste B) soapy taste C) sour taste D) all listed |
optionC |
| An element existing in two or more physical states and maintaining the same chemical characteristics is called ______ |
A) Isamers B) allotropes C) isolapes D) Graphite |
optionB |
| Diamond crystals are of ________shape |
A) Tetrahedral B) Pyramidal triagular C) octahedral D) triangular |
optionC |
| Which allotrope of carbon is used as abrasive |
A) graphite B) coke C) coal D) diamond |
optionD |
| Which allotrope of carbon is used in lead pencil? |
A) graphite B) coke C) diamond D) coke |
optionA |
| Carbon IV oxide is a gas that burns with _flame |
A) yellow B) green C) blue D) colourless |
optionD |
| Which of these statements is correct about Tetraoxosulphate(IV) |
A) Tri-basic acid B) dibasic base C) monobasic acid D) dibasic acid |
optionB |
| Hydrocarbons are of two classes namely: |
A) graphite and diamond B) coke and coal C) aliphatic and gas D) aromatic and aliphatic |
optionD |
| An example of aromatic hydrocarbons is |
A) Ethane B) methane C) cydopropane D) benzene |
optionD |
| Which is not a raw material for chemical industry |
A) Petroleum B) coal C) alum D) salt |
optionC |
| Which is not a use of sodium trioxocarbonate (IV) |
A) heavy chemical? B) soft chemical C) fertilizer D) plastic |
optionD |
| Which is not a use of sodium trioxocarbonate (IV) |
A) for softening B) for manufacturing glass C) for bathing animal D) to manufacture salt |
optionC |
| Which is not a use of hydrogen trioxocarbonate |
A) As baking powder B) As health salts C) As fire extinguishers D) To manufacture hydroxide |
optionD |
| Carbon is often deposited in the exhaust pipe of cars because of the |
A) presence of carbon in petrol B) dehydrogenation of petrol C) incomplete combustion of petrol D) presence of additives in petrol |
optionD |
| The following are heavy chemicals except |
A) Tetraoxosulphate (VI) acid B) caustic soda C) sodium trioxocarbonate(VI) D) Ethane |
optionD |
| Octane numbers is highest in petrol containing a high proportion of |
A) heptane B) octane C) 2-methyl pentane D) 2,2,4 trimethylpentane |
optionD |
| When the kerosene fraction from petrol is heated at high temperature, a lower boiling liquid is obtained. This process is known as |
A) polymerization B) refining C) cracking D) fractional distillation |
optionc |
| Which of the following statements best explain cracking? It is a process |
A) in which alkene adds on itself repeatedly to form long chain polymer B) in which large hydrocarbon molecules are broken into smaller units C) in which carbon results in a zig-zag arrangement D) in which aromatic hydrocarbons are produced. |
optionB |
| What are the values of x, y and z respectively in the following equation? MnO + xHCl MnCl + YH + zCl |
A) 4,1,2 B) 1,2,1 C) 2,1,2 D) 4,2,1 |
optionD |
| Which of the following statements explain why tetraoxosulphate(VI) acid is regarded as a strong acid. |
A) it is dibasic B) it is concentrated C) the acid is completely ionized in aqueous solution D) the acid is corrosive |
optionC |
| The number of replaceable hydrogen atom in one molecule of an acid indicates its |
A) Basicity B) Alkalinity C) Acidity D) Reactivity |
optionA |
| Which of the following is /are characteristics properties of acids? They (I) form hydroxonium ions in water (II).liberate carbon (iv)oxide from trioxocarbonate(iv) salts. (III) Turn blue litmus paper red. (IV) .have a soapy feel |
A) .iv only B) i and ii C) iii and iv D) I ,ii,and iii |
optionD |
| The following acid are monobasic except |
A) Trioxonitrate(v)acid B) Hydrochloric acid C) Ethanoic acid D) Tetraoxosulphate (v)acid |
optionA |
| An acid is a substance which in the presence of water produces |
A) salts B) Oxygen C) Effervescence D) Hydroxonium ions |
optionD |
| Which of the following is an acid salt? |
A) (NH4)2CO3 B) CH COONa C) KHSO4 D) MgSO4 |
optionC |
| The general methods of preparing salts include (I) .neutralization (ii).precipitation (iii).double decomposition (Iv) action of an acid on a metal |
A) .iv only B) i and ii C) iii and iv D) i ,ii,iii,and iv |
optionD |
| Alums are classified as |
A) basic salts B) acid salts C) anhydrous salts D) double salts |
optionD |
| The following salts will produce Carbon (IV) oxide gas on reacting with hydrochloric acid except |
A) CuSO4 B) CaCO3 C) FeS D) K2CO3 |
optionA |
| Which of the following methods is good for the preparation of an insoluble salts? |
A) action of an acid on a metal B) double decomposition C) neutralization D) .action of an acid on an oxide |
optionB |
| Which of the following conclusion about solution of pH4 is correct. |
A) .it contains more H + than HO- B) its POH value will be 10 C) .it is more acidic than a solution of pH 2 D) .its hydrogen ion concentration is 4.0 x10-2 |
optionA |
| Acheson process is a process of producing |
A) graphite from coke at high temperature B) producing coke using graphite at high temperature C) anthracite from carbon D) wood-charcoal from coal. |
optionA |
| ------is an instrument for preparing intermittent supply of gases by reacting |
A) liquid with gas B) liquid with solid C) solid with gas D) .liquid with liquid |
optionB |
| Bubbling of excess carbon (IV) oxide into Calcium hydroxide solution results in the formation of |
A) CaO B) Ca(OH)2 C) CaCO3 D) Ca(HCO3)2 |
optionD |
| When air is passed through concentrated of -----CO2 is removed |
A) HCl B) H2SO4 C) NaOH D) Na2CO3 |
optionC |
| The amphorphous carbon used in making shoe polish and printer ink is |
A) animal charcoal B) carbon black C) graphite D) sugar charcoal |
optionB |
| Graphite and diamond are similar in that they |
A) have octahedral shape B) have same density C) form CO2 on combustion D) conduct electricity |
optionC |
| The major product in the Solvay process is |
A) NaOH B) Na2CO3 C) NH3 D) H2SO4 |
optionB |
| Gas which dissolves in ammoniacal copper (I) chloride but insoluble in water is |
A) NH3 B) CO2 C) NO D) CO |
optionD |
| Fine chemicals have the following characteristics except |
A) they are chemically pure B) they are produced by batch process C) they are produced in large quantity because of high applicability. D) they are produced in small quantity because of limited applicability. |
optionC |
| Exceptional large number of carbon compounds is essentially due to the ability of |
A) carbon to catenate liberally B) various groups to catenate C) Nitrogen, Hydrogen, phosphorus and the Halogens to catenate with themselves D) Hydrocarbons to dominate other groups. |
optionA |
| Universal indicator is added to a colourless solution and turns dark blue. What does this tell you? |
A) It is an acid B) It is neutral C) It is an alkali D) it’s a salt |
optionC |
| What name is given to a base that dissolves in water? |
A) Amphoteric B) An alkali C) A salt D) hydroxide |
optionB |
| Which ionic equation takes place in an acid-alkali neutralization reaction? |
A) H + OH → H2O B) HCl → H + Cl C) NH3 + H2O → NH3 + OH D) H + H →H2 |
optionA |
| Which of the following could be used to neutralize acidic soil? |
A) Sodium chloride B) Calcium oxide C) acidicsol D) salt |
optionB |
| Which two chemicals could you react to make ammonium chloride? |
A) Ammonium hydroxide and hydrochloric acid B) Ammonia and tetraoxosulphate (vi) acid C) Potassium hydroxide and trioxonitrate (v) acid D) ammonia and ammonium |
optionA |
| Calcium Trioxocarbonate (IV) + Hydrochloric acid →… |
A) Calcium chloride + hydrogen B) Calcium chloride + water + carbon dioxide C) Calcium chloride + carbon (ii) oxide + water D) calcium oxide + water + carbon (iv) oxide |
optionC |
| Which of these salts is most likely to be soluble in water? |
A) Potassium nitrate B) Iron carbonate C) Copper oxide D) Zinc oxide |
optionA |
| What is the name of the precipitate made from the reaction between silver trioxonitate (V) and sodium chloride? |
A) Sodium trioxonitrate (V) B) Silver chloride C) Water D) silver oxide |
optionB |
| When producing a soluble salt in a reaction between an acid and an alkali, how can you prepare dry solid crystals from the solution? |
A) Filtration B) Chromatography C) Evaporation D) distillation |
optionD |
| When performing an acid-alkali titration, what piece of apparatus is used to place a fixed volume of the first solution into the conical flask? |
A) Burette B) Pipette C) Beaker D) funnel |
optionB |