JAMB Chemistry Past Questions & Answers - Page 208

1,036.

When water drops are added to calcium carbide in a container and the gas is passed through a jet and lifted, the resultant flame is called an?

A.

oxyethylene flame

B.

oxyhydrocarbon flame

C.

oxyacetylene flame

D.

oxymethane flame

Correct answer is C

No explanation has been provided for this answer.

1,037.

Complete oxidation of propan -1- ol gives?

A.

propanal

B.

propan-2-al

C.

propan-1-one

D.

propanoic acid

Correct answer is D

No explanation has been provided for this answer.

1,038.

Synthetic rubber is made by polymerization of?

A.

2 methyl buta - 1, 3 - diene

B.

2 methyl buta - 1, 2 - diene

C.

2 methyl but -1-ene

D.

2 methyl but-2-ene

Correct answer is A

No explanation has been provided for this answer.

1,039.

Local black soap is made by boiling palm oil with liquid extract of ash. The function of the ash is to provide the?

A.

acid

B.

ester of allanoic acid

C.

alkali

D.

alkanol

Correct answer is C

No explanation has been provided for this answer.

1,040.

The most volatile fraction obtained from fractional distillation of crude petroleum contains?

A.

butane , propane and kerosene

B.

butane , propane and petrol

C.

ethane, methane and benzene

D.

methane, ethane and propane

Correct answer is D

No explanation has been provided for this answer.