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JEE Main & Advanced Chemistry Hydrogen & Its Compounds / हाइड्रोजन और इसके यौगिक Question Bank Mock Test - Hydrogen

  • question_answer
    Washing soda (\[N{{a}_{2}}C{{o}_{3}}.10{{H}_{2}}O\]) is widely used in softening of hard water. If 1L of hard water requires 0.0143 g of washing soda. What is hardness of water in terms of ppm of\[CaC{{O}_{3}}\]?

    Answer:

    5


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