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Redox Reactions question

2019 · 12 Jan · Shift 1 · Q12

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JEE Main
Chemistry
Redox Reactions
2019 · 12 Jan · Shift 1 · Q12

Redox Reactions question

2019 · 12 Jan · Shift 1 · Q12

JEE MainChemistryRedox ReactionsMCQ+4 / −1

The hardness of a water sample (in terms of equivalents of

CaCO_3

) containing 10–3 M

CaSO_4

is (Molar mass of

CaSO_4

= 136 g mol–1)

A
90 ppm
B
100 ppm
C
50 ppm
D
10 ppm

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