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100kg of a sample of water contained 6 o...

100kg of a sample of water contained 6 of `MgSO_(4)` The degree of

A

6 ppm

B

60 ppm

C

5 ppm

D

500 ppm

Text Solution

Verified by Experts

The correct Answer is:
D
`100 kg=10^(5)g rArr "weight" of MgSO_(4)=6g`
hardness of `MgSO_(4)=(6g)/(10^(5)g)xx10^(6)=60ppm`
hardness in term of
`CaCO_(3)=60xx(100)/(120)=50` ppm
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