1.

Sucross solution which is 40% by mass is heated till it becomes 50% by mass. Water lost form 100 g of the solution is

Answer»

10 g
15 g
20 g
25 g

Solution :Originally, 100 g of the solution contains 40 g of sucrose, i.e., water PRESENT = 60 g
To get `50%` solution, 100 g of solution WOULD CONTAIN 50 g of sucrose or 40 g of sucrose will be present in solution `=(100)/(50)xx40=80g`. Thus, water now present `=80-40g=4g.` Hence, water lost `=60-40g=20g`.


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