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200 cm^3 of an aqueous solution of a pro...

`200 cm^3` of an aqueous solution of a protein contains 1.26 g of the protein. The osmotic pressure of such a solution at `27^@C` is found to be `2.57 xx 10^(-3)` bar. The molar mass of the protein is :

A

`1,22,078 g mol^(-1)`

B

`1,00,786 g mol^(-1)`

C

`86,437 g mol^(-1)`

D

`61.022 g mol^(-1)`

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