NDA2017General AbilityGeneral ScienceActual

20 g of common salt is dissolved in 180 g of water. What is the mass percentage of the salt in the solution?

Options

A5 %
B9 %
C10 %
D15 %

Correct answer

C. 10 %

Step-by-step solution

aligned & Mass of solute ( salt )=20 ~g & Mass of solvent ( water )=180 ~g & Mass of solution =20+180=200 ~g & Concentration = mass of solute / mass of solution 100 & =20 100 / 200=2000 / 200=10 % aligned

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