Chemistry · 2022
JEE Main · 30 July 2022, Shift 2 · Q37
The hardness of water is generally expressed in terms of CaCO_3 equivalent. The possible reasons are as follows: (A) Its molar mass is 100, so the…
The hardness of water is generally expressed in terms of $\displaystyle \mathrm{CaCO}_3$ equivalent. The possible reasons are as follows:
(A)
Its molar mass is $\displaystyle 100$ , so the calculations become easier.
(B)
It decomposes at a temperature, $\displaystyle 1200$ K .
(C)
It is insoluble in water.
(D)
It is moisture insensitive.
Choose correct option from the following for the reasons.
Official answer
(4)
(A) , (B), and (C) only
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.