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.

511.

Which of the following alkaline earth metals react more spontaneously with water?

A.

Calcium

B.

Beryllium

C.

Magnesium

D.

Strontium

Correct answer is D

The Group 2 metals become more reactive towards water as you go down the Group.

512.

Which of the following metals is the most essential in the regulation of blood volume, blood pressure and osmotic equilibrium?

A.

Zinc

B.

Manganese

C.

Sodium

D.

Iron

Correct answer is C

No explanation has been provided for this answer.

513.

Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) with

A.

Pb

B.

Zn

C.

Ca

D.

Na

Correct answer is A

No explanation has been provided for this answer.

514.

Burning magnesium ribbon in air removes which of the following
(i) oxygen (ii) nitrogen (iii) argon and (iv) carbon(iv)oxide?

A.

i and iv only

B.

i, ii, iii and iv only

C.

i only

D.

i and ii only

Correct answer is C

No explanation has been provided for this answer.

515.

A synthetic rubber is not obtained from the polymerization of?

A.

neoprene

B.

isoprene

C.

butandiene

D.

hexane

Correct answer is D

No explanation has been provided for this answer.