Jamb Chemistry 1994 Past Questions and Answers

Question 36:

• JAMB 1994

When sodium is added to ethanol, the products are?

A. Sodium hydroxide and water
B. Sodium hydroxide and hydrogen
C. Sodium ethoxide and water
D. Sodium ethoxide and hydrogen

Question 37:

• JAMB 1994

The general formula of alkanoates is?

A. RCHO
B. R₂CO
C. RCOOH
D. RCOOR

Question 38:

• JAMB 1994

One mole of a hydrocarbon contains 48 g of carbon. If it vapour density is 28, the hydrocarbon is?

A. An alkane
B. An alkene
C. An alkyne
D. Aromatic (C = 12, H = 1)

Question 39:

• JAMB 1994

Which of the following reagents will confirm the presence of unsaturation in a compound?

A. Fehling's solution
B. Bromine water
C. Tollen's reagent
D. Benedict's solution

Question 40:

• JAMB 1994

The diagram above represents an atom of

A. Magnesium
B. Helium
C. Chlorine
D. Neon