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.

1,026.

Matter is neither created nor destroyed in the course of any chemical reactions is a statement of the law of

A.

combining volumes

B.

conservation of mass

C.

definite proportion

D.

multiple proportion

E.

reciprocal proportion.

Correct answer is B

No explanation has been provided for this answer.

1,027.

pH is define as

A.

[H+]

B.

–log [H]

C.

–log [H+]

D.

log [H]

E.

log [H+]

Correct answer is C

No explanation has been provided for this answer.

1,028.

Which of the following compounds is unsaturated?

A.

Cyclohexane

B.

Methoxyethane

C.

1 ,2-dibromoethane

D.

2,2,3-trimethylpentane

E.

3-methylbut-l-ene

Correct answer is E

No explanation has been provided for this answer.

1,029.

A solution is prepared by dissolving I .96g of H2SO4 in 250 cm3 of its solution. What is the concentration in moles per dm3?

A.

0.008

B.

0.08

C.

0.1

D.

0.8

E.

8.02

Correct answer is B

No explanation has been provided for this answer.

1,030.

The action of zinc on an acid produces

A.

chlorine

B.

hydrogen

C.

nitrogen

D.

sulphur

E.

water vapour.

Correct answer is B

No explanation has been provided for this answer.