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.

2,056.

The metal extracted from cassiterite is

A.

calcium

B.

copper

C.

tin

D.

sodium

E.

lead

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

2,057.

Petrol can be obtained from diesel by

A.

distillation

B.

cracking

C.

catalysis

D.

polymerization

E.

dehydrogenation

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

2,058.

The following metals are extracted by the electrolytic method except

A.

potassium

B.

calcium

C.

sodium

D.

tin

E.

magnesium

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

2,059.

Which of the following compounds crystallizes without water of crystallization?

A.

Na2CO3

B.

CuSO4

C.

MgSO4

D.

NaCI

E.

FeSO4

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

2,060.

The decomposition of hydrogen peroxide is represented by the equation: 2H2O(l) + O2(g) what mass of hydrogen peroxide would be required to produce 22.4dm3 of oxygen at s.t.p? (H = 1, O = 16, molar volume of a gas at s.t.p. = 22.4dm3)

A.

18 g

B.

34 g

C.

36 g

D.

64 g

E.

68 g

View answer & explanation

Correct answer is E

No explanation has been provided for this answer.


Sub-categories

WAEC


Aptitude Tests

Situational Judgement Questions and Answers

Nigeria General Knowledge Questions and Answers

Data Interpretation Questions and Answers

Microsoft Office Questions and Answers

Personality Test

Verbal Reasoning Questions and Answers

Abstract Reasoning Questions and Answers

Spatial Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Typing Speed and Accuracy Test

Quantitative Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Puzzles Questions and Answers

See all →

Interview Questions & Answers
View latest jobs in Nigeria today