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Borax when heated on platinum wire forms...

Borax when heated on platinum wire forms a glass like bead which is made up of :

A

Sodium tetraborated

B

sodium metaborate

C

sodium metaborate and boric anhydride

D

boric anhydride and sodium tetraborate

Text Solution

Verified by Experts

The correct Answer is:
C
It is the correct answer
`Na_(2)B_(4)O_(7). 10 H_(2)O overset("heat")rarr Na_(2)B_(4)O_(7) overset("heat")rarr underset("Transparent bead")(2NaBO_(2) + B_(2)O_(3))`
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