Jamb Chemistry 1987 Past Questions and Answers

Question 16:

• JAMB 1987

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

Question 17:

• JAMB 1987

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

Question 18:

• JAMB 1987

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

Question 19:

• JAMB 1987

Complete oxidation of propan -1- ol gives?

A. Propanal
B. Propan-2-al
C. Propan-1-one
D. Propanoic acid

Question 20:

• JAMB 1987

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