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Introduction

Why ancient g...

Question

Why ancient glass becomes milky?

On ageing crystallization occurs.

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On ageing refractive index changes.

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On ageing cracks develop.

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On ageing amorphous nature increases.

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Solution

The correct option is A
On ageing crystallization occurs.

Amorphous solids become crystalline on ageing e.g. ancient glass appears milky due to crystallization

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