WAEC Past Questions and Answers - Page 1650

8,246.

Which of the following compounds is unsaturated?

A.

2-methylbutane

B.

Chloromethane

C.

Methylbenzene

D.

1,2-dibromoethane

Correct answer is C

No explanation has been provided for this answer.

8,247.

Which of the following is the most reactive towards bromine?

A.

Methane

B.

Benzene

C.

Ethyne

D.

Hexane

Correct answer is C

No explanation has been provided for this answer.

8,248.

How many carbon atoms are present in one molecule of 2-methylpropane?

A.

2

B.

3

C.

4

D.

5

Correct answer is C

No explanation has been provided for this answer.

8,249.

When dilute copper (ll) chloride solution is electrolysed, the reaction at the cathode is represented by the equation

A.

Cu → Cu2+ + 2e-

B.

Cu2+ + 2e- → Cu

C.

40H- - 4e- → O2 + 2H2O

D.

2CI- → CI2 + 2e

Correct answer is B

No explanation has been provided for this answer.

8,250.

Equal volumes of water were added to one mole of each of the following compounds. Which of them produced the largest number of ions

A.

Glucose

B.

Sodium trioxonitrate (V)

C.

Ethananoic acid

D.

Silver chloride

Correct answer is B

No explanation has been provided for this answer.