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From the colligative properties of solution, which one is the best method for the determination of molecular weight of proteins and polymers?

(a) Osmotic pressure

(b) Lowering in vapour pressure

(c) Lowering in freezing point

(d) Elevation in boiling point

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Best answer

Correct option (a) Osmotic pressure

Explanation :

Polymers and proteins are covalent compounds, therefore by measuring osmotic pressure of their solution, the molecular weight can be determined.

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