Jamb Chemistry 2004 Past Questions and Answers

Question 46:

• JAMB 2004

CH₃COOH_(g) → H_4(g) + CO_2(g)
The reaction above is

A. Carboxylation
B. Decarboxylation
C. Acidification
D. Esterification

Question 47:

• JAMB 2004

C₂H₅OH_(aq) → Y
If the above reaction takes place in conc. H₂SO₄ at 180^o, Y represents

A. CH₄
B. C₂H₅COOH
C. C₂H₄
D. CH₃OCH₃

Question 48:

• JAMB 2004

Alkanol + Alkanoic ↔ Ester + Water
The reverse reaction above is known as

A. Hydrolysis
B. Saponification
C. Hydration
D. Fermentation

Question 49:

• JAMB 2004

In the production of soap, concentrated sodium chloride solution is added to

A. Increase the solubility of soap
B. Decrease the solubility of the soap
C. Saponify the soap
D. Emulsify the soap

Question 50:

• JAMB 2004

In the experiment above, X is a mixture of nitrogen, carbon (IV) oxide and

A. Water
B. Impurities
C. Inert gas
D. Oxygen