WAEC Chemistry Past Questions & Answers - Page 71

351.

A substance responsible for the sour taste of unripe orange is

A.

Alkene

B.

Alkanol

C.

Alkanoic acid

D.

Alkanoate

Correct answer is C

No explanation has been provided for this answer.

352.

Which of the following process does not take place in domestic water treatment?

A.

Chlorination

B.

Flocculation

C.

Neutralization

D.

Sedimentation

Correct answer is C

No explanation has been provided for this answer.

353.

Which of the following substances is a heavy chemical?

A.

Ammonia

B.

Barim Hydroxide

C.

Hydrochloric acid

D.

Tetraoxosulphate(VI)acid

Correct answer is D

No explanation has been provided for this answer.

354.

Which of the following compounds is a secondary alkanol?

A.

Ethanol

B.

2-methylbutan-2-ol

C.

3-methylpentan-2-ol

D.

Propan-1-ol

Correct answer is C

A secondary alkanol has two alkyl groups attached to the carbon atom carrying the hydroxyl group. drawing the structures of the alkanol listed above option C is the correct answer.

355.

Starch could be converted to glucose by the process of

A.

Condensation

B.

Dehydration

C.

Fermentation

D.

Hydrolysis

Correct answer is D

No explanation has been provided for this answer.