Jamb Chemistry Past Questions and Answers

Question 476:

• JAMB 1986

What reaction takes place when palm-oil is added to potash and foam are observed?

A. Neutralization
B. Saponification
C. Esterification
D. Salting-out

Question 477:

• JAMB 1986

When ethanol is heated with excess concentrated sulphuric acid, the ethanol is?

A. Oxidized to ethene
B. Polymerized to polyethene
C. Dehydrated to ethene
D. Dehydrated to ethyne

Question 478:

• JAMB 1986

Which of the following compounds is NOT formed by the action of chlorine on methane?

A. CH₃CI
B. C₂H₅CI
C. CH₂CI₂
D. CHCI₃

Question 479:

• JAMB 1986

Which of the following substance is a mixture?

A. Granulated sugar
B. Sea-water
C. Sodium chloride
D. Iron fillings

Question 480:

• JAMB 1986

The general formula of an alkyl halide (where X represents the halide) is?

A. C_nH_2n2X
B. C_nH_2n + ₁X
C. C_nH_2n + ₂X
D. C_nH_2nX