Banking Chemistry Acids, Bases and Salts / अम्ल, क्षार एवं लवण Question Bank Acids, Bases and Salts

  • question_answer
    Plaster of Paris hardens by -

    A)  giving of \[C{{O}_{2}}\]           

    B)  changing into \[CaC{{O}_{3}}\]

    C)  combining with water  

    D)  giving out water

    Correct Answer: C

    Solution :

     \[CaSo{{O}_{4}}.\frac{1}{2}{{H}_{2}}O+\to CaS{{O}_{4}}.2{{H}_{2}}O\]


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