Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 81:

• 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 82:

• 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 83:

• JAMB 1987

Complete oxidation of propan -1- ol gives?

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

Question 84:

• JAMB 1987

A stream of air was successively passed through three tubes X, Y and Z containing a concentrated aqueous solution of KOH, red hot copper powder and fused calcium chloride respectively. What was the composition of the gas emanating from tube Z?

A. CO₂ ad ithe inert gases
B. N₂, CO₂ and the inert gases
C. N₂ and the inert gases
D. Water vapour, N₂ and the inert gases

Question 85:

• JAMB 1987

In which of the following are the aqueous solutions of each of the substances correctly arranged in order to decreasing acidity?

A. Ethanoic acid, milk or magnesia, sodium chloride, hydrochloric acid and sodium hydroxide
B. Ethanoic acid, hydrochloric acid, milk of magnesia, sodium chloride and sodium chloride and sodium hydroxide
C. Hydrochloride acid, ethanol acid, sodium chloride, milk of magnesia and sodium hydroxide
D. Hydrochloride acid, sodium hydroxide sodium chloride, ethanol acid, and milk of magnesia