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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank The mole concept

  • question_answer
    One mole of calcium phosphide on reaction with excess of water gives                                        [IIT 1999]

    A)                 One mole of phosphine                      

    B)                 Two moles of phosphoric acid           

    C)                 Two moles of phosphine                    

    D)                 One mole of phosphorus pentoxide

    Correct Answer: C

    Solution :

                    \[C{{a}_{3}}{{P}_{2}}+6{{H}_{2}}O\to 2P{{H}_{3}}+3Ca{{(OH)}_{2}}\]


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