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Distillation and Liquation

Name the meta...

Question

Name the metal that is purified by placing the impure metal on sloping hearth of a reverberatory furnace and heating that above its melting point in absence of air.

A

Mercury

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B

Galium

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C

Zirconium

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D

Copper

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Solution

The correct option is D Copper
Copper is the metal that is purified by placing the impure metal on sloping hearth of a reverberatory surface and heating that above its melting point in absence of air.

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The technique in which the material is heated in a sloping hearth until one of the metals starts to melt and drain away from the other is known as __

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Statement - 2: In calcination, the ore is heated in a regular supply of air in a furnace at a temperature below melting point of the calcined product.
Statement - 3: Roasting involves heating in absence of air until volatile matter escapes.
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A l_{2} O_{3}

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which increases the melting point of the mix.

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