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Classification

Silverware be...

Question

Silverware becomes black when exposed to air but regains its lustre on polishing. This is because:

A

Silver is a transparent material.

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B

Silver is an expensive metal.

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C

Silver is insoluble in water.

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D

Silver is a metal and metals have lustre.

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Solution

The correct option is D
Silver is a metal and metals have lustre.

All metals have lustre. Silver is a metal and hence it regains its lustre on polishing.

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