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.

1,476.

Which of the following compounds is a basic salt?

A.

Mg(NO3)2

B.

(NH4)2SO4

C.

K4Fe(CN)6

D.

Zn(OH)CI

Correct answer is D

No explanation has been provided for this answer.

1,477.

Consider the reaction represented by the equation: Ca(OH)2(aq) + CO 2(g) → CaCO3(s) + H 2O(l)
in the reaction above, CO 2 acts as

A.

an acidic oxide

B.

an oxidizing agent

C.

a basic oxide

D.

a dehydrating agent

Correct answer is A

No explanation has been provided for this answer.

1,478.

In which of the following compound (s) will heat be absorbed on adding water?

l. KNO\(_3\) II. Concentrated H\(_2\)SO\(_4\) III. NH\(_4\)CI

A.

I only

B.

lll only

C.

l and lll only

D.

ll and lll only

Correct answer is C

KNO\(_3\) and NH\(_4\)Cl both undergo endothermic. 

1,479.

Which of the following statements is true of the molecules of a gas under ideal conditions? The molecules

A.

move at random

B.

undergo inelastic collisions

C.

attract each other

D.

occupy a large volume

Correct answer is A

No explanation has been provided for this answer.

1,480.

Which of the following gases is light than air?

A.

CO2

B.

SO2

C.

HCI

D.

NH3

Correct answer is D

No explanation has been provided for this answer.