KVPY Sample Paper KVPY Stream-SX Model Paper-16

  • question_answer
    The temporary hardness of water is due to:

    A) \[\text{N}{{\text{a}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

    B) \[NaCl\]

    C) \[\text{Ca}\,{{\text{(HC}{{\text{O}}_{\text{3}}}\text{)}}_{\text{2}}}\] 

    D) \[\text{CaC}{{\text{l}}_{\text{2}}}\]

    Correct Answer: C


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