JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Water or hydride of oxygen

  • question_answer Temporary hardness of water can be removed by [Pb. PMT 2001]

    A) Addition of potassium permagenate

    B) Boiling

    C) Filtration

    D) Addition of chlorine

    Correct Answer: B

    Solution :

    By boiling temporary hardness of water can be removed. \[Ca{{(HC{{O}_{3}})}_{2}}\xrightarrow{\text{Boil}}\underset{\text{(insoluble)}}{\mathop{CaC{{O}_{3}}}}\,+{{H}_{2}}O+C{{O}_{2}}\]

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