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.

3,806.

The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

A.

atomic structure

B.

metallurgy

C.

periodic table of contents

D.

discovery of elements

Correct answer is C

No explanation has been provided for this answer.

3,807.

The molecular formula of phosphorous is

A.

P1

B.

P2

C.

P3

D.

P4

Correct answer is D

No explanation has been provided for this answer.

3,808.

The inert gases are ____ in water

A.

sparingly soluble

B.

insoluble

C.

soluble

D.

None of these

Correct answer is A

No explanation has been provided for this answer.

3,809.

The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

A.

liquation

B.

leaching

C.

levigation

D.

magnetic separation

Correct answer is C

No explanation has been provided for this answer.

3,810.

The metal that is usually extracted from sea water is

A.

Ca

B.

Na

C.

K

D.

Mg

Correct answer is D

No explanation has been provided for this answer.