What is the chemical name of Hypo?

A. Sodium thiosulfate (Na₂S₂O₃·5H₂O)
B. Zinc Oxide (ZnO)
C. Calcium hypochlorite Ca(ClO)₂
D. Ethyl alcohol (C2H5OH)


Correct Answer: A. Sodium thiosulfate (Na₂S₂O₃·5H₂O)

Detailed About MCQs

The chemical name of Hypo is Sodium thiosulfate (Na₂S₂O₃·5H₂O). The sodium thiosulfate is known as a photographic fixer. Sodium thiosulfate is an inorganic compound and available as the white or colorless pentahydrate. It is used for both film and photographic paper processing.