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.

1,736.

An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

A.

ZSO3

B.

Z3CI2

C.

Z 2O 3

D.

ZS3

Correct answer is C

No explanation has been provided for this answer.

1,737.

Chlorine atom forms CI by

A.

losing one electron

B.

Sharing one electron

C.

Donating lone pair of electrons

D.

Gaining one electron

Correct answer is D

No explanation has been provided for this answer.

1,738.

The atoms of four elements are represented as 20Q, 16R, 10S and 8T Which of the elements would be unreactive?

A.

Q

B.

R

C.

S

D.

T

Correct answer is C

No explanation has been provided for this answer.

1,739.

The greenhouse effect is a climatic condition associated with the presence of excess

A.

carbon (IV) oxide

B.

hydrogen sulphide

C.

nitrogen (ll) oxide

D.

ammonia gas

Correct answer is A

No explanation has been provided for this answer.

1,740.

Environmental pollution problems are generally more severe in countries which have

A.

dense population

B.

low birth rate

C.

great land mass

D.

limited industries

Correct answer is A

No explanation has been provided for this answer.