Jamb Chemistry 1992 Past Questions and Answers

Question 41:

• JAMB 1992

Which of the following compounds reacts with sodium metal as well as silver and copper salts ?

A. CH₃C Ξ C—CH₃
B. CH₃CH₂CH_2[sub]3>[/sub]
C. CH₃C Ξ CH
D. CH₃CH = CH CH₃

Question 42:

• JAMB 1992

Which of the following are isomers?

A. Ethanol and dimethyl ether
B. Benzene and methybenzene
C. Ethanol and propanone
D. Trichloromethane and tetrachloromethane

Question 43:

• 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 44:

• 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 45:

• JAMB 1992

The characteristics reaction of carbonyl compounds is?

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