Previous year MCQs

General science UPPSC 2010 GS-I
Question

The hypo solution used in photography is the aqueous solution of

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Sodium thiosulphate

Detailed Solution:

The correct answer is “Sodium thiosulphate”.
The hypo solution used in photography is an aqueous solution of sodium thiosulphate, also known as sodium hyposulfite or "hypo". Its chemical formula is Na₂S₂O₃.

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