1.

(A): Molecular mass of polymers is always expressed as an average. (R) : Generally, a polymer sample contains chains of varying lengths.

Answer»

Both (A) and (R) are TRUE and (R) is the CORRECT explanation of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
(A) is true but (R) is FALSE
Both (A) and (R) are false

Answer :A


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