WAEC Past Questions and Answers - Page 1649

8,241.

Which of the following is needed to produce slag during the extraction of iron in the blast furnace?

A.

Cryolite

B.

Limestone

C.

Carbon

D.

Sulphur

Correct answer is B

No explanation has been provided for this answer.

8,242.

Geometric (cis-trans) isomerism is exhibited by

A.

C 2H 2CI 2

B.

CH2CI5

C.

C 4H 10

D.

C5H12

Correct answer is A

No explanation has been provided for this answer.

8,243.

Which of the following is a secondary alkanol?

A.

OHCI2-CH2OH

B.

H2C=CH-CH2OH

C.

CH 3-CH(OH)-CH 3

D.

CH3-(CH2)3-CH2OH

Correct answer is C

No explanation has been provided for this answer.

8,244.

Alkanoates are produced from alkanols by

A.

fermentation

B.

saponification

C.

oxidation

D.

esterification

Correct answer is D

No explanation has been provided for this answer.

8,245.

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.