JAMB Past Questions and Answers - Page 1382

6,906.

The monomer of nylon is

A.

Hydroxybenzene

B.

Hexanedioic acid

C.

Benzene -1,-4-dicarboxylic acid

D.

Ethane-1,2-diol

Correct answer is B

No explanation has been provided for this answer.

6,907.

In the laboratory preparation of chlorine from concentrated hydrochloric acid in the presence of potassuim tetraoxomanganate(VII) the produced is dried by passing it through

A.

Concentrated tetraoxosulphate (VI) acid

B.

Anhydrous calcium chloride

C.

Calcium oxide

D.

Sodium hydroxide

Correct answer is A

No explanation has been provided for this answer.

6,908.

The enzyme used in the hydrolysis of starch to dextrin and maltose is

A.

Zymase

B.

Sucrase

C.

Amylase

D.

Lactase

Correct answer is C

No explanation has been provided for this answer.

6,909.

An endothermic reaction is one during which heat is.....and can be represented by the symbol.... which of the following combinations can be used accurately to complete the above definition?

A.

liberated, -\(\Delta\)H

B.

liberated, +\(\Delta\)H

C.

absorbed, -\(\Delta\)H

D.

absorbed, +\(\Delta\)H

E.

absorbed, +\(\Delta\)G

Correct answer is D

No explanation has been provided for this answer.

6,910.

Which of the following classes of organic compounds undergoes rapid oxidation with bromine water?

A.

alcohols

B.

alkenes

C.

carboxylic acids

D.

esters

E.

alkanes

Correct answer is B

No explanation has been provided for this answer.