86. 25g of a solute of molar mass 250 g

mol^-1   is dissolved in 100 mL of water to obtain a solution whose density is 1.25 g mL^-1  The molarity and molality of the solution are respectively

a. 0.75 and 1

b. 0.8 and 1

c. 1 and 0.8

d. 1 and 0.75

Ans. c

(7)