WAEC Chemistry Past Questions & Answers - Page 27

132.

The most common method of preparing insoluble salts is by

A.

filtration

B.

decomposition

C.

neutralization

D.

double decomposition

Correct answer is D

No explanation has been provided for this answer.

133.

A molecular of phosphorus is

A.

diatomic

B.

triatomic

C.

tetraatomic

D.

monoatomic

Correct answer is C

No explanation has been provided for this answer.

134.

Which of the following gasses is highly soluble in water at room temperature

A.

ammonia

B.

carbon (IV) oxide

C.

chlorine

D.

nitrogen

Correct answer is A

No explanation has been provided for this answer.

135.

The formation of ethene from dehydration of ethanol can be described as-------

A.

an addition reaction

B.

an elimination reaction

C.

an oxidation reaction

D.

a substitution reaction

Correct answer is B

No explanation has been provided for this answer.