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.

2,046.

The products of the electrolysis of dilute sodium chlorid solution with platinum electrodes are

A.

hydrogen and oxygen

B.

oxygen and chlorine

C.

chlorine and water

D.

sodium amalgam and chlorine

E.

sodium hydroxide and water

Correct answer is A

No explanation has been provided for this answer.

2,047.

Which of the following formula is that of a dicarboxylic acid?

A.

(CH3CH 2)2CHCOOH

B.

CH2(OH)2

C.

CH3CH(OH)COOH

D.

CH2(COOH)2

E.

CH3COCOOH

Correct answer is D

No explanation has been provided for this answer.

2,048.

Brass is an alloy of copper and

A.

iron

B.

chromium

C.

zinc

D.

tin

E.

magnesium

Correct answer is C

No explanation has been provided for this answer.

2,049.

CH2 = CH2 + H2SO4 → CH3 - CH2 -OSO3H. The reaction illustrated by the equation above is an example of

A.

substitution

B.

oxidation

C.

reduction

D.

addition

E.

displacement

Correct answer is D

No explanation has been provided for this answer.

2,050.

Which of the following elements can from more than one acidic oxide?

A.

Hydrogen

B.

Sulphur

C.

Carbon

D.

Alumium

E.

Iron

Correct answer is B

No explanation has been provided for this answer.