The process which are subjected to action of heat in absence of air is called

Extraction

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Polishing

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Calcination

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None of these

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Solution

The correct option is C Calcination
Calcination is defined as converting an ore into its oxide by heating strongly , below its melting point either in a limited supply of air or in the absence of air.

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Similar questions

Name the products formed when :

(a) wood is burnt in the absence of air.

(b) bone is heated in the absence of air.

(d) graphite is subjected to high pressure and 3000 $^{\circ}$ C temperature.

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

B

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