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Q.

(A) The molecular mass of the polymers cannot be calculated using the boiling point or freezing point method.
(R) The freezing point method is used for determining the molecular mass of small molecules.

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a

Both (A) and (R) are true but (R) is not the correct explanation of (A)

b

Both (A) and (R) are true and (R) is the correct explanation of (A)

c

Both (A) and (R) are false

d

(A) is true but (R) is false

answer is A.

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Detailed Solution

The molecular mass of large molecules is determined using the osmotic pressure technique. The molecular mass of smaller molecules is determined using the freezing point lowering method.

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(A) The molecular mass of the polymers cannot be calculated using the boiling point or freezing point method.(R) The freezing point method is used for determining the molecular mass of small molecules.