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In the metallurgy of Zn the Zn dust obta...

In the metallurgy of Zn the Zn dust obtained from roasting and reduction of zinc sulphide contains some ZnO. It is removed by

A

Absorbance of ultraviolet light and re-emission of white light is employed

B

Shock cooling by contact with a shower of molten lead is done

C

X–ray method is used

D

Smelting is employed

Text Solution

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The correct Answer is:
D
Factual.
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ERRORLESS-THE d-AND f- BLOCK ELEMENTS -NCERT BASED QUESTIONS (Compounds of Transitional Elements)
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  7. Zinc when reacted with excess of NaOH gives

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