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Which of the following properties of polyurethane rubbers is incorrect as compared to other rubbers?

Which of the following properties of polyurethane rubbers is incorrect as compared to other rubbers? Correct Answer excellent resistance to acids

The polyurethane rubbers have higher tensile strength than any other rubber, excellent abrasion resistance and resistance to oxygen and ozone. However they are less resistant to acids and alkalies than other conventional rubbers.

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