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The chemical name of ‘‘Hypo’’ commonly used in photography is
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- Sodium thiosulphate
- Silver nitrate
- Sodium nitrate
- Silver iodide
- Sodium thiosulphate
Correct Option: A
An emulsion of sodium thiosulfate is called hypo by photographers. It is used to stop development of exposed film. Thiosulfate converts undeveloped silver bromide grains in the film into water-soluble silver thiosulfate complexes that can be removed when the film is washed.