WAEC Past Questions and Answers - Page 1733

8,661.
8,662.

A farmer purchased a sprayer for N12,500 in 1974, at the end of the fourth year, he sold it for N4,300. The salvage value is

A.

N1,075

B.

N2,150

C.

N4,300

D.

N8,400

Correct answer is C

No explanation has been provided for this answer.

8,663.

A farmer purchased a sprayer for N12,500 in 1974, at the end of the fourth year, he sold it for N4,300. The total depreciation is

A.

N16,800

B.

N8,200

C.

N7,250

D.

N820

Correct answer is B

No explanation has been provided for this answer.

8,664.

Nitrogen is prepared on a large scale by the

A.

fractional distillation of liquefied air

B.

decomposition of ammonium dioxonitrate (lll)

C.

electrolysis of brine

D.

Haber process

E.

Contact process

Correct answer is A

No explanation has been provided for this answer.

8,665.

What is the role of MnO2 in the reaction represented by the following equation?MnO2 + 4HCI2 + CI2 + 2H2O

A.

Bleaching agent

B.

Oxidizing agent

C.

Amphoteric oxide

D.

Basic oxide

E.

Catalyst

Correct answer is B

No explanation has been provided for this answer.