The chemical used as a ‘fixer’ in photography is

1 Borax

2 Sodium thiosulphate

3 Sodium sulphate

4 Ammonium persulphate



The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium..

Answer / guest

(2) Sodium thiosulphate

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