Home PYQs UPPSC UPPSC MCQs Prelims 2010 (GS Paper I)

Question

The hypo solution used in photography is the aqueous solution of

  1. Sodium thiosulphate
  2. Sodium tetrahionate
  3. Sodium sulphate
  4. Ammonium per sulphate

Answer:

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.