WAEC Chemistry Past Questions & Answers - Page 97

481.

The reaction between ethene and chlorine to form 1, 2-dichloroethane is

A.

oxidation

B.

polymerization

C.

addition

D.

substitution

Correct answer is C

No explanation has been provided for this answer.

482.

The following compounds are hydrocarbons except

A.

methylpropanoate

B.

2-methylbutane

C.

benzene

D.

cyclohexane

Correct answer is A

No explanation has been provided for this answer.

483.

When alkynes are hydrogenated completely they produce compounds with the general molecular formula

A.

CnHn

B.

CnH2n

C.

CnH2n+2

D.

CnH2n-2

Correct answer is C

No explanation has been provided for this answer.

484.

Which of the following compounds can be represented by the molecular formula C2H6O?

A.

Propanal

B.

Ethanol

C.

Methanoic acid

D.

Glucose

Correct answer is B

No explanation has been provided for this answer.

485.

Which of the following processes takes place during the production of margarine from vegetable oils?

A.

Esterification

B.

Hydrolysis

C.

Hydrogenation

D.

Saponification

Correct answer is C

No explanation has been provided for this answer.