JAMB Chemistry Past Questions & Answers - Page 351

1,751.

A good drying agent should be

A.

deliquescent

B.

effervescent

C.

hygroscopic

D.

efflorescent

Correct answer is C

No explanation has been provided for this answer.

1,752.

The presence of nitrogen in air is to slow down

A.

respiration and combustion

B.

combustion and corrosion

C.

corrosion and respiration

D.

respiration and transpiration

Correct answer is B

No explanation has been provided for this answer.

1,753.

A supersaturated solution is said to contain

A.

more solute than it can dissolve at that temperature in the presence of undissolved solute

B.

as much solute as it can dissolve at that temperature in the presence of undissolved solute

C.

as much solute as it can dissolve at that temperature

D.

more solute than it can dissolve at that temperature

Correct answer is D

No explanation has been provided for this answer.

1,754.

When temporary hard water is boiled for sometime in a kettle, the inner surface of the kettle becomes coated with a deposit of

A.

calcium tetraoxosulphate(VI)

B.

calcium trioxocarbonate (IV)

C.

calcium hydrogentrioxocarbonate (IV)

D.

aluminium trioxocarbonate (IV)

Correct answer is B

No explanation has been provided for this answer.

1,755.

The IUPAC nomenclature of compound CH3CH2COOCH2CH3 is

A.

propyl ethanoate

B.

ethyl butanoate

C.

ethyl propanoate

D.

methyl butanoate

Correct answer is C

No explanation has been provided for this answer.