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Roasting

The calcinati...

Question

The calcination process is carried out in the absence of ______.

A

sulphur dioxide

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B

nitrogen

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C

carbon dioxide

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D

oxygen

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Solution

The correct option is D oxygen

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Q. Calcination is a process in which the ore is heated strongly in the absence of air to remove volatile impurities. It thermally decomposes the carbonate.

2 F e_{2} O_{3} . 3 H_{2} O C a l c i n a t i o n - ------ \to A + 3 H_{2} O

A

:

Q. Calcination is a process in which the ore is heated strongly in the absence of air to remove volatile impurities. It thermally decomposes the carbonate.

A C a l c i n a t i o n - ------ \to C a O + M g O + 2 C O_{2}

Calcination is a process in which ore is heated in the absence of air. As a result of which the ___ ore is converted into its oxide.

Q. Assertion :Roasting is a process in which the ore is heated strongly in absence of air. Reason: Concentration of sulphide ore is done by calcination.

Q. Assertion :In metallurgy calcination use for purification of metals Reason: Calcination is a chemical process wherein a carbonate ore or an oxide ore is strongly heated in the absence of air, to decompose it to remove volatile matter and moisture.

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