A blend of nylon 6 and polyester fibres when dissolved in formic acid at room
A blend of nylon 6 and polyester fibres when dissolved in formic acid at room

Q. A blend of nylon 6 and polyester fibres when dissolved in formic acid at room temperature leaves a bone dry residue of 40% by weight. The weight fraction of polyester in the blend (rounded off to 1 decimal place) is   .

Ans: 0.4-0.4

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