JAMB Chemistry Past Questions & Answers - Page 92

456.

The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using

A.

Dilute ammonia

B.

Benedict's solution

C.

Tollen's reagent

D.

Sodium hydroxide solution

Correct answer is C

No explanation has been provided for this answer.

457.

The colour of litmus in an alkaline medium is

A.

Red

B.

Yellow

C.

Pink

D.

Blue

Correct answer is D

No explanation has been provided for this answer.

458.

The relative atomic mass of a naturally occurring lithium consisting of 90%\(\frac{7}{3}\)Li and 10%\(\frac{6}{3}\)Li is

A.

6.2

B.

6.8

C.

7.1

D.

6.9

Correct answer is D

(\(\frac{90}{100}\) x 7) + (\(\frac{10}{100}\) x 6)

= 6.3 + 0.6 = 6.9

459.

The industrial preparation of hydrogen gas from water gas is referred to as

A.

Bosch process

B.

Contact process

C.

Haber process

D.

Bayer Process

Correct answer is A

No explanation has been provided for this answer.

460.

The ability of carbon to form long chains is referred to as

A.

Alkylation

B.

Acylation

C.

Carbonation

D.

Catenation

Correct answer is D

No explanation has been provided for this answer.