A. Natural rubber is an elastomer.
R. The inter-molecular forces of attraction between the polymer chains are weak vander Waals forces.

Both A and R are correct and R is the correct explanation of the A

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

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A is correct but R is in correct

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A is incorrect but R is correct

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Solution

The correct option is A Both A and R are correct and R is the correct explanation of the A
Natural rubber is an elastomer. It has low values of elasticity and tensile strength.
The inter-molecular forces of attraction between the polymer chains are weak vander Waals forces.
Hence, both A and R are correct and R is the correct explanation of the A

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A. Natural rubber is an elastomer.R. The inter-molecular forces of attraction between the polymer chains are weak vander Waals forces.

A. Natural rubber is an elastomer.
R. The inter-molecular forces of attraction between the polymer chains are weak vander Waals forces.