______________ Nature of hypo (sodium thiosulphate) makes it useful in photography ?
Correct answer: C. Complex forming
- A. Oxidising
- B. Reducing
- C. Complex forming
- D. Photochemical
Explanation
Thiosulphate forms a soluble complex with silver halide, dissolving the unexposed silver salts from photographic film during fixing. Its usefulness therefore depends on complex formation rather than oxidation or reduction.
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