| 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 |