Chemistry-

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When lime stone is heated strongly, it gives off $C O subscript 2 end subscript$ . In metallurgy this process is known as

(a) Calcination
Roasting
(c) Smelting
Ore dressing

The correct answer is: (a) Calcination

$C a C O subscript 3 end subscript rightwards arrow C a O plus C O subscript 2 end subscript$
Heating the ore in absence of air is calcination.

Important ore of Mg is

Important ore of Mg is
Chemistry-General

General
Chemistry-
The most important ore of tin is
The most important ore of tin is
Chemistry-General
General
Chemistry-
The principal ores of silver are argentite, horn silver and pyrargyrite. Their formula respectively are
The principal ores of silver are argentite, horn silver and pyrargyrite. Their formula respectively are
Chemistry-General
General
Chemistry-
Indicate the mineral from which copper is manufactured
Indicate the mineral from which copper is manufactured
Chemistry-General
General
Chemistry-
The most abundant metal in the earth crust is
The most abundant metal in the earth crust is
Chemistry-General
General
Chemistry-
Important ore of zinc is
Important ore of zinc is
Chemistry-General

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When lime stone is heated strongly, it gives off . In metallurgy this process is known as

(a) Calcination Roasting (c) Smelting Ore dressing

The correct answer is: (a) Calcination

Heating the ore in absence of air is calcination.

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Which of the following is a carbonate ore

Important ore of Mg is

Important ore of Mg isChemistry-General

The most important ore of tin is

The most important ore of tin is

The principal ores of silver are argentite, horn silver and pyrargyrite. Their formula respectively are

The principal ores of silver are argentite, horn silver and pyrargyrite. Their formula respectively are

Indicate the mineral from which copper is manufactured

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The most abundant metal in the earth crust is

The most abundant metal in the earth crust is

Important ore of zinc is

Important ore of zinc is

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When lime stone is heated strongly, it gives off $C O subscript 2 end subscript$ . In metallurgy this process is known as

(a) Calcination
Roasting
(c) Smelting
Ore dressing

$C a C O subscript 3 end subscript rightwards arrow C a O plus C O subscript 2 end subscript$
Heating the ore in absence of air is calcination.

Important ore of Mg is
Chemistry-General