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Question

Annealing of glass is done to:

A
make it brittle
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B
make it opaque
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C
make it transparent
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D
none of the above
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Solution

The correct option is B none of the above
Annealing of glass is done to make it durable and relieve thermal stresses. It increases the strength and makes glass more reliable. For this purpose, hot glass is slowly cooled after it is formed.

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