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UPSC Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Chemistry, Matter and its Composition

  • question_answer
          In which one of the following situations a chemical reaction does not occur?                            [NDA]

    A) Common salt is exposed to air

    B) Coal is burnt in air

    C) Sodium is placed in water

    D) Iron is kept in moist air

    Correct Answer: A

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