WAEC Chemistry Past Questions & Answers - Page 152

756.

Which of the following salts is insoluble in water?

A.

Pb (NO3)2

B.

Na 2CO3

C.

AgNO3

D.

AgCI

Correct answer is D

No explanation has been provided for this answer.

757.

A solution that contains as much solute as it can dissolve at a given temperature is said to be

A.

concentrated

B.

saturated

C.

supersaturated

D.

unsaturated

Correct answer is B

No explanation has been provided for this answer.

758.

Which of the following acids from normal salt only?

A.

Tetraoxosulphate (IV) acid

B.

Tetraoxophosphate (V) acid

C.

Trioxonitrate (V) acid

D.

Trioxosulphate (IV) acid

Correct answer is C

No explanation has been provided for this answer.

759.

Which of the following hydroxides will readily dissolved in water?

A.

Cu(OH)2

B.

NaOH

C.

Pb(OH)2

D.

Zn(OH)2

Correct answer is B

No explanation has been provided for this answer.

760.

Which of the following compounds is not a double salt?

A.

Zn(OH)NO3

B.

KAI(SO4)2

C.

KCr(SO4)2

D.

(NH4)2Fe(SO4)2

Correct answer is A

No explanation has been provided for this answer.