Question 766:

• JAMB 1992

The functional group present in an organic compound which gives bubbles on treatment with a saturated solution of NaHCO₃ is?

A. Hydroxyl group
B. Carboalkoxyl group
C. Carbonyl group
D. Carboxyl group

Question 767:

• JAMB 1992

An organic compound containing 40.1% carbon and 6.6% hydrogen has an empirical formula of?

A. C₂H₄O₂
B. C₂H₃O₂
C. CH₂O
D. CH₃O

Question 768:

• JAMB 1992

The characteristics reaction of carbonyl compounds is?

A. Substitution
B. Elimination
C. Addition
D. Saponfication

Question 769:

• JAMB 1992

Alkanals can be differentiated from alkanones by reaction with?

A. 2,4-dinitrophenylhydrazine
B. Hydrogen cyanide
C. Sodium hydrogen sulphite
D. Tollen's reagent

Question 770:

• JAMB 1992

An example of a polysaccharides is?

A. —dextrose
B. Mannose
C. Glucose
D. Starch