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Hydrogen — quick quiz

5 real JEE Advanced questions on Hydrogen. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 3

EASY

Hard water containing 162 ppm of Ca²⁺ ions is passed through a zeolite softener. After softening, the water contains Na⁺ ions instead of Ca²⁺. The number of Na⁺ ions (in ppm) present in the softened water is approximately: