Chemistry questions and answers

Chemistry Questions and Answers

Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.

2,111.

How many carbon atoms are there in a benzene ring?

A.

4

B.

5

C.

6

D.

7

E.

8

Correct answer is C

No explanation has been provided for this answer.

2,112.

If 200cm 3 of a gas at s.t.p. has a mass of 0.268g, what is its molar mass? (Molar volume of a gas at s.t.p. = 22.4 dm3)

A.

300g

B.

200g

C.

150g

D.

30g

E.

15g

Correct answer is D

No explanation has been provided for this answer.

2,113.

The following are miscible with water except

A.

ethylethanoate

B.

methanol

C.

ethanoic acid

D.

methanoic acid

E.

ethanol

Correct answer is A

No explanation has been provided for this answer.

2,114.

The most suitable method to use when separating an insoluble solid from a liquid is

A.

evaporation

B.

filtration

C.

magnetization

D.

sublimation

E.

distillation

Correct answer is B

No explanation has been provided for this answer.

2,115.

Which of the following hydrocarbons is not likely to be present in petrol?

A.

C14H30

B.

C10H22

C.

C9H20

D.

C7H16

E.

C5H12

Correct answer is A

No explanation has been provided for this answer.