JAMB Past Questions and Answers - Page 1483

7,411.

The compound above is an

A.

ether

B.

ester

C.

alkanal

D.

alkanol

Correct answer is B

No explanation has been provided for this answer.

7,412.

Use the option above to answer this question. The graph that describes a zero order reaction is

A.

A

B.

B

C.

C

D.

D

Correct answer is B

No explanation has been provided for this answer.

7,413.

The diagram above is the solubility curve of a solute, X. Find the amount of X deposited when 500cm3 of a solution of X is cooled from 60oC to 20oC.

A.

0.750 mole

B.

0.950 mole

C.

2.375 moles

D.

4.750 moles

Correct answer is A

No explanation has been provided for this answer.

7,414.

Which of the compounds above would react to take up two molecules of bromine durng bromination?

A.

l only

B.

lll only

C.

l and ll only

D.

ll and lll only

Correct answer is C

No explanation has been provided for this answer.

7,415.

In the diagram above, the mixture of the solids P and Q can be separated by?

A.

distillation

B.

fractional distillation

C.

crystallization

D.

fractional crystallization

Correct answer is D

The process involves a series of repeated-crystallizations.