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UPSC Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank Environmental Chemistry

  • question_answer
    The chemical used as a 'fixer' in photography is [LAS Prelim]

    A) Sodium sulphate

    B) Sodium thiosulphate

    C) Ammonium per sulphate

    D) Borax

    Correct Answer: D

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