WAEC Chemistry Past Questions & Answers - Page 216

1,076.

Which of the following compounds reacts with sodium hydroxide to form a salt?

A.

CH 3CH 2COOH

B.

(CH3) 3COH

C.

CH3CH=CH 2

D.

C 6H 12O 6

Correct answer is A

Like aqueous mineral acids, an alkanoic acid like propanoic acid (CH\(_3\)CH\(_2\)COOH) neutralizes a base like NaOH to produce a salt and water only in a NEUTRALIZATION REACTION.

1,077.

Which of the following compounds is unsaturated?

A.

2-methylbutane

B.

Chloromethane

C.

Methylbenzene

D.

1,2-dibromoethane

Correct answer is C

No explanation has been provided for this answer.

1,078.

Which of the following is the most reactive towards bromine?

A.

Methane

B.

Benzene

C.

Ethyne

D.

Hexane

Correct answer is C

No explanation has been provided for this answer.

1,079.

How many carbon atoms are present in one molecule of 2-methylpropane?

A.

2

B.

3

C.

4

D.

5

Correct answer is C

No explanation has been provided for this answer.

1,080.

When dilute copper (ll) chloride solution is electrolysed, the reaction at the cathode is represented by the equation

A.

Cu → Cu2+ + 2e-

B.

Cu2+ + 2e- → Cu

C.

40H- - 4e- → O2 + 2H2O

D.

2CI- → CI2 + 2e

Correct answer is B

No explanation has been provided for this answer.