19. Osmotic pressure of a urea solution at
10 ° C is 500 mm. Osmotic pressure of the solution become 105.3 mm. when it is dilute and temperauter raised to 25° C . the extent of dilution is
a. 6 times
b. 5 time
c. 7 time
d. 4 time
Ans. b
(10)
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