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Crystalline and Amorphous Solid

Brown glass a...

Question

Brown glass and cement have, which element common in them:

A

F e

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B

A l

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C

N a

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D

all of these

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Solution

The correct option is A $F e$
Brown glass (amber) - $i r o n$ Cement - lime ( $C a O$ )
sulphur silica $(S i O_{2})$
carbon alumina $({A l}_{2} O_{3})$
magnesia, ironoxide,
calsium sulphate, ${S O}_{3}$
Brown glass and cement have $F e$ as common element.

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