It is sometimes necessary to remove colouring matter contained as… - Vidyadip

MCQ

It is sometimes necessary to remove colouring matter contained as an impurity in glass. Glass is decolourised by:

A
Wood charcoal.
✓
Manganese dioxide.
C
Bleaching powder.
D
Hydrogen.

✓

Answer

Correct option: B.

Manganese dioxide.

Glass is decolourised by manganese dioxide.

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