85 Q.23 CH3 H H C C H H H O C NC N H C OCH3 H HH C CH3 06, 2009 · Which of the following statements concerning a “soapless detergents” is ... Detergent II: CH3 CH CH2 CH CH2

Section 6 / Sect6pp.doc / S. W. Tse / P.1

85 Q.23 Which of the following statements concerning propan-1-ol is correct? A. When its vapour is passed over heated porcelain, propane is produced. B. Its reaction with sodium is less vigorous than the reaction between sodium and water. C. Its aqueous solution has a pH value greater than 7. D. It has a lower boiling point than that of methanol. 85 Q.24 Which of the following structures represents a polymer made by condensation polymerization? A.

C CH H

HCH3

n

B.

C CH H

H

n

Cl

C.

C

H

H

N C N

H H

O

n

D.

C

H n

C

H

CH3

C

O

O CH3

85 Q.34 If wine is left too long in a half-filled bottle, it goes sour.

The alcohol in the wine is slowly oxidized by air.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 85 Q.35 Nylon liberates ammonia when it is strongly heated with soda-lime.

Nylon contains the elements nitrogen and hydrogen.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False -----


85 Q.45 When ethanoic acid reacts under reflux with propan-2-ol in the presence of concentrated sulphuric acid, which of the following statements is/are correct?

(1) The product is immiscible with water. (2) The sulphuric acid is used up during the reaction. (3) The reaction is reversible.

A. (1) only B. (1) and (2) only C. (1) and (3) only D. (2) and (3) only 85 Q.46 If ethyl ethanoate is refluxed with an excess of sodium hydroxide solution, the hydrolysis of the ester can go to completion because

(1) the alkali can catalyst hydrolysis. (2) the sodium ethanoate and ethanol formed do not react with each other. (3) all hydrolysis reactions go to completion.

Which of the following is/are true? A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only 85 Q.47 Which of the following statements concerning a “soapless detergents” is / are correct?

(1) It reduces the surface tension of water. (2) It does not form a scum with sea water. (3) It is manufactured from fat and sodium hydroxide.

A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only 85 Q.48 When polyvinyl chloride (PVC) is strongly heated in the above set-up, which of the following would occur?

(1) The PVC chars. (2) White fumes are formed inside the combustion tube. (3) A white precipitate is formed in the test-tube.

A. (1) only B. (1) and (2) only C. (2) and (3) only D. (1), (2) and (3)

to suction pump

test-tube

silver nitrate solution

strong heating

air

combustion tube a piece of PVC


86 Q.23

X + Y CH3CH2 CO

O CH2CH3+ H2O

Which of the following represents the correct structural formula for X and Y in the above equation?

X Y A. CH3CH2OH

CH3 CO

OH B. CH3CH2OH

CO

OHCH3CH2

C. CH3CH2CH2OH

CH3 CO

OH D.

CH3CHOH

CH3

CH3 C

O

OH 86 Q.25 Which of the following combinations correctly represents the monomer, repeating unit and structural formula of polypropene?

monomer repeating unit structural formula A.

C CCH3 H

HH C C C

H

H H

H

H

H

C C C

H

H H

H

H

H n B. CH3-CH2-CH3

C CH H

HCH3

C CH H

HCH3

n C.

C CCH3 H

HH C CH H

HCH3

C C C

H

H H

H

H

H n D.

C CCH3 H

HH C CH H

HCH3

C CH H

HCH3

n


86 Q.36 CH3-CH2-OH and CH3-O-CH3 are structural isomers.

CH3-CH2-OH and CH3-O-CH3 have the same molar mass.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 86 Q.46 Which of the following statements are true for a “soapless” detergent? (1) It does not form any bubbles when shaken with water. (2) Its molecule usually has a hydrophilic end. (3) It is usually synthesized from by-products of the petroleum refining industry. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 87 Q.21 Which of the following statements concerning soapless detergents is correct? A. They are biodegradable. B. They form a scum with sea-water. C. They have a hydrophilic end and a hydrophobic end. D. They are made by the sponification of vegetable oils. 87 Q.22 Which of the following statements concerning nylon is correct? A. It is an addition polymer. B. It melts in boiling water. C. It has a low tensile strength. D.

It contains the C N

O H

linkage. 87 Q.37 Alkanols can trun red litmus blue. Alkanols contain the -OH group. 1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False -----


87 Q.44 Sulphuric acid can be used in the manufacture of (1) lead accumulators. (2) rayon. (3) soapless detergents. A. (1) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 87 Q.48 Which of the following NOT occur during the fermentation of a glucose solution? A. Oxygen is evolved. B. Carbon dioxide is evolved. C. Ethanol is formed. D. The temperature of the solution rises. 87 Q.50 Which of the following statements concerning polystyrene is INCORRECT? A. Polystyrene is an electrical insulator. B. Polystyrene can be used as a heat insulator. C. Expanded polystyrene (styrofoam) is widely used as a packaging material. D. The structure of polystyrene is

C CH

H

H

n 88 Q.11 In which of the following will a redox reaction occur? A. adding sodium to ethanol B. bubbling sulphur dioxide into sodium hydroxide solution C. heating copper(II) hydroxide D. adding zinc oxide to concentrated nitric acid 88 Q.22 When CH3CH=CH2 is bubbled into an acidified KMnO4 solution, which of the following compounds would be formed? A. CH3CH2CH(OH)2 B. CH2(OH)CH2CH2OH C. CH3C(OH)2CH3 D. CH3CH(OH)CH2OH


88 Q.27 Ethanol and propanoic acid are heated together as shown in the diagram. The main purpose of using the condenser is to A. prevent ethanol from catching fire. B. prevent loss of the reactants. C. purify the product. D. separate ethanol from propanoic acid. Directions: Question 88 Q.43 to Q.44 refer to the possible structural formulae of THREE detergents shown below: Detergent I:

CH2CH2

CH2CH2

CH2CH2

CH2CH2

CH2CH2

CH2CH2

CH2CH2

CH2CH2

C

O

O- Na+CH3 Detergent II:

CH3CH

CH2CH

CH2CH

CH2CH

CH2CH

CH2CH

C

CH3 CH3 CH3 CH3 CH3 CH3

O

O-Na+

Detergent III:

CH3CH

CH2CH

CH2CH

CH2CH

CH2CH

CH2CH

CH3 CH3 CH3 CH3 CH3 CH3

OS

O

OO-Na+

88 Q.43 Which of the three detergents can function normally in both hard and soft water? A. (I) only B. (III) only C. (I) and (II) only D. (II) and (III) only

water out

condenser

ethanol + propanoic acid

water in

heat


88 Q.44 Which of the three detergents would cause the more serious pollution problems? A. (I) only B. (III) only C. (I) and (II) only D. (II) and (III) only 88 Q.45 Which of the following are condensation polymers? (1) urea-methanal (2) perspex (3) nylon 6,6 (4) polystyrene A. (1) and (2) only B. (1) and (3) only C. (1), (2) and (3) only D. (2), (3) and (4) only 88 Q.46 Which of the following properties make plastics useful in daily life? (1) They are chemically inert. (2) They can be moulded to any shape. (3) They are heat resistant. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) only 89 Q.31 Bromine water can be readily decolorized by shaking with ethene, but not with ethane.

Each ethane molecule contains a higher percentage by mass of hydrogen than each ethene molecule.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 89 Q.32 When nylon is heated, ammonia is give off. In the nylon molecule, nitrogen and

hydrogen atoms are in a ratio of 1:3. 1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False -----


89 Q.44 Which of the following types of reaction can propene undergo? (1) hydrogenation (2) polymerization (3) combustion A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 89 Q.45 Which of the following statements concerning soapless detergents are correct? (1) They do not form scum with calcium ions. (2) They are made from by-products of the petroleum industry. (3) They are all biodegradable. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 89 Q.50 Which of the following statements concerning methane is INCORRECT? A. It is found in natural gas. B. It is combustible. C. It reacts with chloride under sunlight. D. It is the main component of local town gas. 90 Q.37 Clothes stained with grease can be cleaned by detergents because detergents can (1) decrease the surface tension of water. (2) dissolve in both water and grease. (3) emulsify greasy particles. Which of the following combinations is correct? A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 90 Q.38 Which of the following statements concerning the production of soap from vegetable oils and sodium hydroxide solution is / are correct? (1) Sodium hydroxide acts as a catalyst. (2) Glycerol is formed at the end of the reaction. (3) The reaction between vegetable oils and sodium hydroxide solution is reversible. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 90 Q.39 A glass of sweet wine is left on a dining table. After two days, the wine becomes sour. Which of the following type of reactions accounts for this change? A. oxidation B. hydrolysis C. fermentation D. esterification


90 Q.40 When a piece of plastic X is placed on a hot place at about 200oC, it starts to soften. When X is placed in a flame, it burns with a yellow flame and liberates smoke with a vinegar smell. X is likely to be A. polythene. B. polyvinyl chloride. C. cellulose ethanoate. D. urea methanal. 90 Q.41 Which of the following polymers is / are made by condensation polymerization? (1) (2) (3)

C

OHH

H n

C

H

H

n

C

H

C

H

H n

C

COOCH3

CH3 A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only 91 Q.22 Propene reacts with acidified potassium permanganate solution to form A. CH3CH2CH2OH. B. CH3CH(OH)CH3. C. CH3CH(OH)CH2OH. D. CH2(OH)CH(OH)CH2OH. 91 Q.26 Teflon, a polymer used for coating non-stick cooking utensils, has the structure given below:

C C C C C C

F

F

F

F

F

F

F

F

F

F

F

F Which of the following is the monomer for Teflon? A. 1,2-difluoroethane B. 1,2-difluoroethene C. 1,1,2,2-tetrafluoroethane D. 1,1,2,2-tetrafluoroethene 91 Q.27 A sample of polymer gives acid fumes on strong heating. The polymer is probably A. nylon. B. polypropene. C. polystyrene. D. polyvinyl chloride.


91 Q.30 Propan-1-ol is refluxed with acidified potassium permanganate solution for a long time. Which of the following descriptions is / are correct? (1) The reactants undergo esterification. (2) Propanoic acid is formed. (3) The permanganate is reduced. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 91 Q.33 Which of the following statements is / are true for soapless detergents? (1) All soapless detergents are not biodegradable. (2) Soapless detergents form a scum with sea water. (3) Soapless detergents are mainly manufactured from products of the petroleum industry. A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only 91 Q.40 Which of the following compounds would react with each other to form a condensation polymer?

(1) C C

H H

H

(2)

HO C (CH2)4 C OH

O O

(3) H2N C N2H

O

(4) H2N (CH2)6 NH2

A. (1) and (2) B. (1) and (3) C. (2) and (4) D. (3) and (4)


91 Q.42 With reference of the above diagram, which of the following statements about gas X are correct? (1) X is combustible. (2) X is lighter than air. (3) X can decolorize bromine water. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 91 Q.49 In the preparation of soap, sodium chloride is added after the reaction between oil and sodium hydroxide has been completed.

Sodium chloride can increase the solubility of soap.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 92 Q.20 Which of the following compounds does NOT react with propan-1-ol? A. sodium B. bromine water C. acidified potassium permanganate solution D. ethanoic acid 92 Q.21 When 2-methylpropene reacts with bromine in tetramethane, the product is A.

Br C C C H

H

H

H Br

CH3 H

.

B. Br C C C H

H

H CH3 H

HBr . C.

C C C H

H H CH3H

H Br Br .

D. C C C H

H

H

BrHBr

CH3 H

.

gas X

water heat

rocksil soaked with butan-2-ol

broken porcelain


Directions: Question 92 Q.22 and 92 Q.23 refer to the making of soap as represented by the following reaction:

soapanimal fat

HCOOC(CH2)16CH3

COOC(CH2)16CH3

COOC(CH2)16CH3

H2

H2

+ 3NaOH HCOH

COH

COH

H2

H2

+ 3CH3(CH2)16COONa

92 Q.22 What is / are the function(s) of the sodium hydroxide in this reaction? (1) to acts as a catalyst (2) to neutralize acid formed during the reaction (3) to lower the solubility of soap in water so as to salt out the soap A. (1) only B. (1) and (2) only C. (1) and (3) only D. (2) and (3) only 92 Q.23 Soap has a hydrophilic head and a hydrophobic tail. Which of the following combinations is correct? hydrophilic head hydrophobic tail A. Na+ CH3(CH2)16 B. COO- CH3(CH2)16 C. Na+ CH3(CH2)16COO- D. CH3(CH2)16COO- Na+ 92 Q.25 The polymer formed by H2N-(CH2)6-NH2 and HOOC(CH2)4COOH A. has a formula of

N (CH2)6 N C (CH2)4 C

H H O O

n . B. is a thermosetting plastic. C. has cross-linkages. D. burns with a floral smell.


92 Q.41 A compound, C2H4O2, reacts with ethanol in the presence of concentrated sulphuric acid to form a product with a fruit smell. Which of the following statements about this compound is / are correct? (1) It can liberate carbon dioxide from sodium carbonate solution. (2) It can decolorize acidified potassium permanganate solution. (3) Its aqueous solution is an electrolyte. A. (3) only B. (1) and (2) only C. (1) and (3) only D. (1), (2) and (3) 92 Q.42 Nowadays plastics are often used as substitutes for metals. Which of the following are the advantages of plastics over metals in the motor car industry? (1) Plastics have low densities. (2) Plastics are non-conductors of electricity. (3) Plastics are resistant to corrosion. (4) Plastic can be moulded. A. (1) and (2) only B. (3) and (4) only C. (1), (2) and (3) only D. (1), (3) and (4) only 92 Q.43 Which of the following polymers is / are NOT suitable for making a container for boiling water? (1) perspex (2) urea-methanal (3) polyvinyl chloride A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 92 Q.47 Polyester is a thermoplastic. Polyester is formed by condensation

polymerization. 1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False -----


Directions: Question 93 Q.30 and 93 Q.31 refer to the following experiment: A mixture of methyl propanoate and sulphuric acid was allowed to react by heating under reflux for some time until equilibrium was reached. The resulting mixture M was then transferred flask Y and heated as shown below: 93 Q.30 What is the function of the piece apparatus labelled X? A. to condense the products in M B. to separate the products in M C. to prevent the loss of the products in M due to evaporation D. to prevent the loss of the reactants in M due to evaporation 93 Q.31 The first fraction of the distillate collected in flask Z is mainly A. methanol. B. propan-1-ol. C. methanoic acid. D. propanoic acid.

water out

water in

flask Z

heat

mixture M

flask Y

X


93 Q.34 When concentrated sulphuric acid is added dropwise to a solution containing urea and methanal in a test tube with shaking, a white solid can be formed. Which of the following statements about this experiment is / are correct? (1) The reaction involved is condensation polymerization. (2) Concentrated sulphuric acid acts as an oxidizing agent. (3) The white solid is a thermoplastic substance. A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only 93 Q.35 A polymer has the following structure:

C C C C C C

Cl

Cl

Cl

Cl

Cl

ClH

H

H

H

H

H

Its monomer is A. chloroethene. B. 1,1-dichloroethane. C. 1,2-dichloroethene. D. 1,2-dichloroethane. 94 Q.20 X is synthetic polymer. On gentle heating, it softens and chars. On strong heating, it burns with an acidic smell. X is probably A. polypropene. B. polystyrene. C. polyvinyl chloride. D. perspex.


Directions: Question 94 Q.24 and 94 Q.25 refer to the structural formulae of the following three detergents: Detergent I

CH3

CH2CH2

CH2CH2

CH2CH2

CH2CH2

CH2C

O

O- K+

Detergent II

CH3

CH2CH2

CH2CH2

CH2CH2

CH2CH2

CH2

SO3- K+

Detergent III

CH3C

CC

CC

H

H

H

H

H

CH3 CH3 CH3

CH3CH3 SO3-K+

94 Q.24 Which of the above is / are soapless detergent(s)? A. detergent I only B. detergent III only C. detergents I and II only D. detergents II and III only 94 Q.25 Which of the following statements concerning these detergents is correct? A. The hydrocarbon tail of detergent III is hydrophilic. B. Both detergents I and II form scum with seawater. C. Detergent III cause more serious pollution problems than detergent I when discharged into

rivers. D. Both detergents II and III are made from fats.


94 Q.41 A compound has the structure:

C CH

H

CH3CH2

H

Which of the following statements about this compound are correct? (1) It can decolorize bromine water. (2) It can be polymerized. (3) It can burn in air. A. (1) and (2) only B. (1) and (3)only C. (2) and (3) only D. (1), (2) and (3) 94 Q.42 Which of the following substances can be fermented to give an alcoholic drink? (1) grapes (2) wheat (3) potatoes A. (1) and (2) only B. (1) and (3)only C. (2) and (3) only D. (1), (2) and (3) 94 Q.50 Rayon can be made from cellulose. Rayon is a polymer. 1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 95 Q.20 Which of the following statements concerning alkenes is INCORRECT? A. They can decolourize a solution of bromine in 1,1,1-trichloroethane. B. They can decolourize red litmus solution. C. They can decolourize acidified potassium permanganate solution. D. They can be polymerized to form addition polymers. 95 Q.21 Which of the following diseases is NOT associated with the excessive drinking of alcohol? A. stomach ulcer B. brain damage C. sore throat D. liver damage


95 Q.22 The formula below can be used to represent the structure of some polymers.

C C C C

H H H H

H HX X (X represents an atom or a group of atoms.) Which of the following combinations is INCORRECT? X Name of polymer A. H polyethene B. Cl polyvinyl chloride C. CH3 perspex D. C6H5 polystyrene 95 Q.35 Which of the following substances, when mixed with lemon juice, would give off gas bubbles? (1) iron nails (2) milk of magnesia (3) polyethene wrap A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 95 Q.36 Which of the following statements concerning urea-methanal is / are correct? (1) It softens on gentle heating. (2) It can be used to make ash trays. (3) It consists of polymer chains with cross-linkages between the chains. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 95 Q.41 Which of the following statements concerning the recycling of plastic are correct? (1) The recylcing of plastic can help to solve the disposal problem of plastics. (2) The recycling of plastic can save raw materials derived from petroleum. (3) It is difficult to separate different types of plastics in the recycling process. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 95 Q.47 Nylon softens on heating. Nylon is a condensation polymer. 1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False -----


96 Q.5 Which of the following materials are suitable for making the base and handle of a frying pan? Base Handle A. aluminium polyvinyl chloride B. copper urea-methanal C. titanium polyvinyl chloride D. zinc urea-methanal 96 Q.13 Which of the following substances is NOT derived from petroleum? A. bleach B. ethanol C. polystyrene D. soapless detergent 96 Q.14 (B) One mole of each of the following compounds is burnt completely in oxygen. Which compound requires greatest volume of oxygen, measured at the same temperature and pressure, for complete combustion? A. carbon monoxide B. ethane C. ethene D. ethanol 96 Q.18 (D) When a little detergent is added to a drop water on a piece of woolen cloth as shown above, the drop spreads. Which of the following statements correctly explains this observation? A. The detergent dissolves readily in water. B. The detergent has a polar end which is hydrophilic. C. The detergent can form an emulsion with water. D. The detergent can reduce the surface tension of water. 96 Q.22 Which of the following statements concerning the manufacture of ethanol by fermentation is INCORRECT? A. Wheat can be used as a raw material. B. Yeast is required in the fermentation process. C. Carbon dioxide is liberated in the fermentation process. D. The ethanol produced can be completely extracted by simple distillation.

a drop of water woolen cloth


Directions: 96 Q.23 and Q.24 refer to the following experiment. A reaction mixture containing acidified potassium dichromate solution and ethanol is heated using the set-up shown below: 96 Q.23 In this experiment, the reaction mixture is undergoing A. reflux. B. distillation. C. emulsification. D. fractional distillation. 96 Q.24 Which of the following statements concerning this experiment is correct? A. The acidified potassium dichromate solution acts as a catalyst. B. The reaction mixture gradually becomes brown. C. Ethanol is reduced during the experiment. D. Ethanoic acid is formed during the experiment. Directions: Question 96 Q.28 and Q.29 refer to the following experiment used to study the causes of hardness of water. A student added some soap solution to four test tubes containing the same volume of different aqueous solutions of the same molarity. He shook the tubes and measured the minimum volume of soap solution needed to form a permanent lather. The results are tabulated below :

Aqueous solution Minimum volume of soap solution needed / cmsodium chloride 0.6 calcium chloride 9.3

potassium chloride 0.9 magnesium chloride 8.5

96 Q.28 Which of the following apparatus would be most suitable for measuring the volume of soap solution ? A. 50 cm burette B. 50 cm measuring cylinder C. 25 cm pipette D. 10 cm beaker

heat

reaction mixture

water out

water in condenser


96 Q.29 Which of the following substances is/are responsible for the hardness of water ? (1) sodium chloride (2) calcium chloride (3) potassium chloride (4) magnesium chloride A. (1) only B. (2) only C. (1) &(3) only D. (2) & (4) only 96 Q.34 Which of the following statements concerning nylon and urea-methanal is / are correct? (1) They are formed by condensation polymerization. (2) They have cross-linkages between polymer chains. (3) They are nitrogen-containing compounds. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 96 Q.41 Which of the following statements concerning propan-1-ol are correct? (1) Propan-1-ol can be used as a solvent. (2) Propan-1-ol can undergo polymerization. (3) Propan-1-ol can undergo esterification with ethanoic acid in the presence of

concentrated sulphuric acid. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 97 Q.15 Which of the following substances, when mixed, would produce a precipitate? A. chlorine water and potassium bromide solution B. ethyl ethanoate and ethanol C. iron (III) sulphate solution and aqueous ammonia D. nitric acid and potassium hydroxide solution 97 Q.20 When a glass of wine is left overnight, it becomes sour. Which of the following reactions is responsible for this change? A. fermentation B. oxidation C. dehydration D. esterification 97 Q.22 Which of the following statements concerning the compound, CH3COOCH2CH3, is correct? A. It is a food preservative. B. It has a pleasant smell. C. Its systematic name is methyl ethanoate. D. It is an electrolyte.


97 Q.40 Which of the following methods can be used to solve the pollution problems associated with the disposal of plastic waste? (1) recycling of plastics (2) making biodegradable plastics (3) burning plastic waste in incinerators with tall chimneys A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 98 Q.14 Which of the following statements concerning propene is correct? A. It can be converted by catalytic hydration to an alkanol with molecular formula C3H8O. B. It can undergo condensation polymerization. C. It can be manufactured by fractional distillation of crude oil. D. It can undergo substitution reaction with a solution of bromine in 1,1,1-trichloroethane. 98 Q.15 A detergent has the following structure:

Which of the following statements concerning the detergent is correct? A. Its hydrocarbon chain is hydrophilic. B. It can be manufactured from vegetable oil. C. It is readily degraded by micro-organisms. D. It acts as an emulsifier in the cleaning process


98 Q.24 Consider the following manufacturing process:

Which of the following graphs (not drawn to scale) can represent the change in relative molecular masses of the substances involved during the manufacturing process?

98 Q.36 Which of the following statements concerning polystyrene is/are correct?

(1) It is a condensation polymer. (2) It can be remoulded. (3) It can be used to make packaging material for electrical appliances.

A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only


98 Q.41 Which of the following problems are associated with the excessive use of soapless detergents?

(1) They can cause skin allergies. (2) They form foam when discharged into rivers and lakes. (3) They form scum when discharged into the sea.

A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 98 Q.48 The ethanol content of beer is less than that of red wine.

Beer is made by fermentation of barley while red wine is made by fermentation of grapes.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 98 Q.49 Wash bottles used in the chemistry laboratory are commonly made of polyethene.

Polyethene is an addition polymer.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 99 Q.3 Which of the following substances has the lowest boiling point? A. ethanol B. propan – 1 –ol C. propane D. butane


99 Q.26 Some concentrated sulphuric acid and pumice stones were added to an alkanol and an alkanoic acid. The mixture was heated under reflux for some time and the following compound was obtained:

Which of the following combinations is correct? Alkanol Alkanoic acid A. methanol ethanoic acid B. methanol propanoic acid C. ethanol ethanoic acid D. ethanol propanoic acid 99 Q.27 Which of the following statements concerning the experiment is correct? A. Concentrated sulphuric acid acts as an oxidizing agent in the reaction. B. The purpose of using pumice stones is to speed up the reaction. C. A fractionating column should be used in the experimental set-up. D. Heating under reflux can prevent the loss of reactants and products. 99 Q.28 Which of the following substances is a thermoplastic as well as a condensation polymer? A. Nylon B. perspex C. polyethene D. urea-methanal


99 Q.41 Plastic X .has the following structure:

Which of the following statements concerning X are correct?

(1) The monomer of X is HCl=CHCl. (2) X can be used to make electric sockets. (3) The flue gas produced by the incineration of X can cause the formation of acid rain.

A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 99 Q.43 Which of the following statements concerning a soapless detergent are correct?

(1) It can be prepared by heating a cooking oil with sodium hydroxide solution. (2) It acts as a wetting agent by reducing the surface tension of water. (3) It acts as an emulsifying agent in the cleaning process.

A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 99 Q.48 Local tap water produces a scum with soap.

Water containing calcium ions can form an insoluble compound with soap.



00 Q.13 Consider the compounds represented by the two structures below: Which of the following statements concerning these compounds is correct? A. Both compounds can turn wet blue litmus paper red. B. Both compounds have the same odour. C. Both compounds have the same molecular formula. D. Both compounds have the same boiling point. 00 Q.15 A polymer has the following structure: What is the monomer of this polymer? A. butane B. but-l-ene C. but-2-ene D. 2-methylpropene 00 Q.32 Which of the following articles should be made from thermosetting plastics?

(1) wallpaper (2) television casing (3) water bucket



00 Q.36 Which of the following polymers is/are made by condensation polymerization? A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 00 Q.38

Some concentrated sulphuric acid was poured into a sink connected to a catchpot made of polyvinyl chloride (PVC). After some time, the catchpot became deformed. Which of the following explanations for the deformation of the catchpot is/are correct?

(1) The heat liberated when the concentrated sulphuric acid mixed with the water in the catchpot caused PVC to soften.

(2) PVC was decomposed into its monomers by the concentrated sulphuric acid. (3) PVC was oxidized by the concentrated sulphuric acid.



00 Q.41 Which of the following statements concerning soaps are correct?

(1) They are esters. (2) They can reduce the surface tension of water. (3) Their aqueous solutions are alkaline.

A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 01 Q.9 Which of the following statements concerning uses of plastics is correct? A. Perspex is used for making ash trays. B. Polyvinyl chloride is used for making raincoats. C. Polystyrene is used for making floor tiles. D. Nylon is used for making packaging materials for electrical appliances. 01 Q.12 Which of the following processes is NOT involved in the production of ethanol from crude oil? A. cracking B. fermentation C. catalytic hydration D. fractional distillation 01 Q.17 Which of the following compounds is a monomer of polyvinyl chloride (polychloroethene)? A. CH2 = CHCl B. CH2 = CCI2 C. CHCl = CHCl D. CCl2 = CCl2 01 Q.21 Which of the following statements concerning ethanol and butan-2-ol is INCORRECT? A. Both compounds can dissolve iodine. B. Both compounds can be represented by the same general formula. C. The boiling point of ethanol is higher than that of butan-2-ol. D. Each compound can be obtained by catalytic hydration of the corresponding alkene. 01 Q.25 The reaction involved in the preparation of ethanoic acid from ethanol is A. an addition. B. a condensation. C. a redox. D. a dehydration.


01 Q.31 Which of the following measures can reduce the emission of sulphur dioxide from a factory using diesel fuel?

(1) the installation of catalytic converters (2) the installation of scrubbers (3) the installation of electrostatic precipitators

A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 01 Q.41 Which of the following statements concerning oil spillage on the sea are correct? (1) Petroleum is toxic to marine lives. (2) Petroleum can block the oxygen supply to marine lives. (3) Petroleum can cause outbreak of fire on the sea. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 01 Q.45 Urea-methanal is used to make electric plugs. Urea-methanal is a condensation polymer. 1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 01 Q.50 The reaction of ethanoic acid with ethanol is a neutralization.

Water is one of the products formed in the reaction of ethanoic acid with ethanol.



02 Q.20 The monomer of polymer X is chloroethene. Which of the following statements concerning X is correct ? The repeating unit of X is as follows: A. X is a condensation polymer. B. X is a thermosetting plastic. C. X is used in making drainage pipes. D. 02 Q.21 In a boiler using hard water, scale is deposited on its interior after a period of time. The scale consists mainly of metal carbonates. Which of the following substances can be used to remove the boiler scale? A. soapless detergent B. chlorine bleach C. sodium hydroxide solution D. vinegar 02 Q.24 Which of the following statements concerning sodium hydroxide is INCORRECT? A. It is manufactured by treating sodium with water. B. Its concentrated solution is corrosive. C. It is used in the manufacture of soapless detergents. D. It absorbs carbon dioxide when exposed to air. 02 Q.29 In which of the following substances are the molecules furthest apart from each other at room temperature and pressure? A. Butane B. water C. propan-l-ol D. iodine 02 Q.30 Starch, a natural polymer, is a carbohydrate. When concentrated sulphuric acid is added dropwise to some starch, a black substance is formed. The reaction involved is A. dehydration. B. depolymerization. C. redox reaction. D. neutralization.


02 Q.33

Which of the following reactions is/are endothermic?

(1) the fermentation of glucose (2) the cracking of naphtha (3) the reaction of lime with dilute hydrochloric acid A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 02 Q.35 A student heated a mixture of fat and sodium hydroxide solution for some time. He then added the mixture to a beaker of saturated sodium chloride solution. A white solid was formed. Which of the following statements concerning this experiment is/are correct?

(1) The reaction between fat and sodium hydroxide is esterification. (2) The white solid is a soap. (3) The white solid contains salts of alkanoic acids. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 02 Q.43 In which of the following processes will carbon dioxide be produced?

(1) the fermentation of glucose solution (2) the biodegradation of animal faeces (3) the treatment of car exhaust in a catalytic converter

A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 03 Q.17 An organic compound has the following structure. The systematic name of this compound is A. 1,2-dimethylethanol. B. 1-methylpropan-1-ol. C. 1-mehtylpropan-2-ol. D. butan-2-ol.


03 Q.19 Soap was prepared by heating fat with sodium hydroxide solution for some time. Concentrated sodium chloride solution was then added to the resulting mixture. The purpose of adding concentrated sodium chloride solution is A. to help the precipitation of the soap. B. to enhance the cleansing power of the

soap. C. to reduce the alkalinity of the soap. D. to act as a preservative for the soap. 03 Q.29 A detergent has the structure shown below: Which of the following statements concerning this detergent is correct? A. It is non-biodgegradable. B. It functions well in hard water.

C. It can be manufactured from vegetable

oils. D. The portion, CH3(CH2)10CH2 -, is

hydrophilic. 03 Q.31 Propene is an unsaturated hydrocarbon. Which of the following reactions is/are characteristic of the unsaturated nature of propene?

(1) It undergoes incomplete combustion to give carbon monoxide. (2) It decolourises acidified potassium permanganate solution. (3) It undergoes polymerisation to give polypropene.

A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 03 Q.36 Which of the following statements concerning thermoplastics is/are correct?

(1) They soften upon heating. (2) They are cross-linked polymers. (3) They are addition polymers. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only


03 Q.38 The structures of two organic compounds are shown below: Which of the following statements concerning these two compounds is/are correct? (1) They have the same relative molecular mass. (2) They have the same chemical properties. (3) They are both soluble in water. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 03 Q.48 Polyethene is used for making the handle of frying pans.

The shape of the polyethene handle remains unchanged during the frying process.

1st statement 2nd statement A. True True 2nd statement is a correct explanation of the 1st one. B. True True 2nd statement is NOT a correct explanation of the 1st one.C. True/False False/True Only ONE of the statements is true, the other is false. D. False False ----- 03 Q.49 Sodium carbonate can be used to soften hard water which contains calcium ions.

Sodium carbonate reacts with calcium ions in hard water to form a precipitate.



M.C. Answer

85 86 87 88 89 90 91 92 93 23 B 23 B 21 C 11 A 31 B 37 D 22 C 20 B 30 B 24 C 25 D 22 D 22 D 32 D 38 B 26 D 21 A 31 A 34 A 36 B 37 C 27 B 44 D 39 A 27 D 22 B 34 A 35 B 46 C 44 D 43 B 45 A 40 C 30 D 23 B 35 C 45 C 48 A 44 D 50 D 41 A 33 B 25 A 46 C 50 D 45 B 40 C 41 C 47 C 46 D 42 B 42 D 48 D 49 C 43 C 47 B 94 95 96 97 98 99 00 01 02 20 C 20 B 5 B 15 C 14 A 3 C 13 C 9 B 20 C 24 D 21 C 13 A 20 B 15 D 26 B 15 C 12 B 21 D 25 C 22 C 14 B 22 B 24 D 27 D 32 B 17 A 24 A 41 D 35 A 18 D 40 A 36 D 28 A 36 A 21 C 29 A 42 D 36 D 22 D 41 A 41 B 38 A 25 C 30 A 50 B 41 D 23 A 48 B 43 C 41 C 31 B 33 B 47 B 24 D 49 B 48 C 41 D 35 D 28 A 45 B 43 D 29 D 50 C 34 C 41 B 03 17 19 29 31 36 38 48 49

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85 Q.23 CH3 H H C C H H H O C NC N H C OCH3 H HH C CH3 06, 2009 · Which of the following statements concerning a “soapless detergents” is ... Detergent II: CH3 CH CH2 CH CH2