JAMB Chemistry Past Questions & Answers - Page 210

1,046.

Alloys are best prepared by?

A.

high temperature weilding of the metals

B.

electrolysis using the major metallic component as cathode

C.

reducing a mixture of the oxies of the elements

D.

cooling a molten mixture of the necessary elements

Correct answer is D

No explanation has been provided for this answer.

1,047.

Stainless steel is an alloy of?

A.

Iron, carbon and silver

B.

iron, carbon and lead

C.

iron, carbon and chromium

D.

iron and carbon only

Correct answer is C

No explanation has been provided for this answer.

1,048.
1,049.

When sodium hydroxide is heated with ammonium tetraoxosulphate (IV), the gas given off may be collected by?

A.

bubbling it through concentrated H2SO2

B.

bubbling it through water and then passing it through calcium oxide

C.

passing it directly through calcium oxide

D.

passing it directly through calcium chloride

Correct answer is C

No explanation has been provided for this answer.

1,050.