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Types of Glass and Its Uses

Which of the ...

Question

Which of the substance is present in the photochromatic glass?

A

PbO

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B

C r_{2} O_{3}

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C

Borax

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D

Silver bromide

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Solution

The correct option is D Silver bromide
Photochromatic glasses are generally made up of glass containing small crystals of silver halides like ( $A g B r$ ) that darkens when exposed to light.

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Q. Assertion :Silver bromide is used in photography. Reason: Silver bromide is used in photography because silver bromide is photosensitive. It decomposes and is converted into metallic silver grains when light is incident on it.

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(A g S C N)

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Given that

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10^{- 12}

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= 5 \times 10^{- 13}

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Types of Glass and Its Uses

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