The two metals which can be extracted just by heating their sulphides in air are:
(a) sodium and copper
(b) copper and aluminium
(c) potassium and zinc
(d) mercury and copper

Open in App

Solution

(d) mercury and copper
Both mercury and copper are less reactive metals and are placed low in the reactivity series. Hence, they can be extracted by heating their sulphides in air and further reducing their oxides by heating.

Suggest Corrections

Similar questions

The two metals which can be extracted just by heating their sulphides in the air are:
(a) sodium and copper (b) copper and aluminium
(c) potassium and zinc (d) mercury and copper

Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper (b) mercury (c) aluminium (d) zinc

The metals which can produce amphoteric oxides are:
(a) Sodium and aluminium (b) zinc and potassium (c) calcium and sodium (d) aluminium and zinc

A metal less reactive and another metal more reactive than hydrogen are
(a) aluminium and lead (b) iron and magnesium

Q. Aluminium and copper are extracted from their oxide and sulphide ores respectively. Which of the following is correct ?
I. Copper is extracted by the auto reduction of copper oxide by copper sulphide.
II. Aluminium cannot be obtained by chemical reduction due to its strong affinity for oxygen.
III. In electrometallurgy of

A l

, graphite is used as cathode to avoid reoxidation of

A l

into

A l_{2} O_{3}

by preventing formation of

O_{2}

.
IV. Sulphide ores of copper are difficult to be reduced than the oxide ores.

Join BYJU'S Learning Program

The two metals which can be extracted just by heating their sulphides in air are: (a) sodium and copper (b) copper and aluminium (c) potassium and zinc (d) mercury and copper

(d) mercury and copperBoth mercury and copper are less reactive metals and are placed low in the reactivity series. Hence, they can be extracted by heating their sulphides in air and further reducing their oxides by heating.

The two metals which can be extracted just by heating their sulphides in air are:
(a) sodium and copper
(b) copper and aluminium
(c) potassium and zinc
(d) mercury and copper

(d) mercury and copper
Both mercury and copper are less reactive metals and are placed low in the reactivity series. Hence, they can be extracted by heating their sulphides in air and further reducing their oxides by heating.