JAMB Chemistry Past Questions & Answers - Page 118

586.

Use the graph above to answer this question.How long does it take all the solid to melt?

A.

2.5 mins

B.

6.0 mins

C.

1.0 min

D.

3.0 mins

Correct answer is A

No explanation has been provided for this answer.

587.

Use the graph above to answer this question.If the gas is cooled, at what temperature will it start to condense?

A.

125 oC

B.

150oC

C.

175oC

D.

250oC

Correct answer is B

No explanation has been provided for this answer.

588.

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.

589.

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.

590.

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.