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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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Q.
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 __

Q. Name the process of heating of an ore in the absence of air below its melting point.

Q. Choose the correct option for the following statements
Statement - 1: Sulphide ore is firstly converted to oxide and then it is subjected to reduction for the extraction of metal.
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.
Statement - 4: In the metallurgy of aluminium, purified

A l_{2} O_{3}

N a_{3} A l F_{6}

C a F_{2}

which increases the melting point of the mix.

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Q. Heating of ore in absence of air below its melting point is called

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