NEET Sample Paper NEET Sample Test Paper-1

  • question_answer Alum is widely used to purify water since

    A)  it forms complex with clay particles

    B)  it coagulates the mud particles

    C)  it exchanges \[C{{a}^{2+}}\] and \[M{{g}^{2+}}\] ions present in hard water.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

    D)  its sulphate ion is water purifier

    Correct Answer: B

    Solution :

    Alum is widely used to purify water since it coagulates the mud particles.


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