What is the chief constituent of pyrex glass?

What is the chief constituent of pyrex glass?

$B_{2} O_{3}$
$S i O_{2}$
$A l_{2} O_{3}$
$N a_{2} O$

Solution

Pyrex glass is obtained by fusing together 60 to 80%

S i O_{2},

10 to 25%

B_{2} O_{3}

and remaining amount of

A l_{2} O_{3}

Asked in: JEE-TOPICTESTS-CHEMISTRY

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