JAMB Chemistry Past Questions & Answers - Page 190

946.

An example of oxidation - reduction enzyme is

A.

amylase

B.

protease

C.

lipase

D.

dehydrogenase

Correct answer is D

No explanation has been provided for this answer.

947.

Ethanol reacts with concentrated tetraoxosulphate (VI) acid at a temperature above 170 oC to form

A.

ethanone

B.

ethene

C.

ethyne

D.

ethanal

Correct answer is B

No explanation has been provided for this answer.

948.

2 - methyl propan -2- ol is an example of a

A.

primary alkanol

B.

secondary alkanol

C.

tertiary alkanol

D.

quartenary alkanol

Correct answer is C

No explanation has been provided for this answer.

949.

The saponification of an alkanoate to produce soap and alkanol involves

A.

dehydration

B.

esterification

C.

hydrolysis

D.

oxidation

Correct answer is C

No explanation has been provided for this answer.

950.

A compound contains 40.0% C, 6.7% H 53.3% O. If the molecular mass of the compound is 180, its molecular formula is [C =12, H =1,O]

A.

CH2O

B.

C3H6O3

C.

C6H6O3

D.

C6H12O6

Correct answer is D

No explanation has been provided for this answer.