Solution A has 5% salt concentration and remaining water. After heating 50 litres of Solution A at a certain temperature, due to evaporation, the salt concentration increases to 10%. The amount of water remaining in the solution would be
Correct answer: D
Explanation
Before Evaporation:
Salt : 5% of 50 litre = 2.5 litre
Water: 95% of 50 litre = 47.5 litre
After Evaporation:
Salt concentration is 10%. Now the salt content will not change after evaporation. So 2.5 litre = 10% of 25 litre.
Hence, remaining water = 25 litre - 2.5 litre = 22.5 litre
Answer is D
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