Everyday Science
NULL
Medium
Question
The chemical used as a photographic fixer is __________?
A
Sodium sulphate
B
Borax
C
Sodium thiosulphate
✓ Official correct answer
D
Ammonium sulphate
Community credibility
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A
Sodium sulphate
No member explanations yet for this option.
B
Borax
No member explanations yet for this option.
C
Sodium thiosulphate
No member explanations yet for this option.
D
Ammonium sulphate
No member explanations yet for this option.
Explanation
Hypo / sodium thiosulphate dissolves undeveloped silver halide.
So the correct answer is Sodium thiosulphate.
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