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Question

Adding poisonous substances like methanol to make ethyl alcohol unfit for drinking purpose is called :

A
fermented alcohol
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B
absolute alcohol
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C
denatured alcohol
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D
toxic alcohol
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Solution

The correct option is C denatured alcohol
Adding poisonous substances like methanol, pyridine, acetone etc. to make ethyl alcohol unfit for drinking purpose is called denatured alcohol or methylated spirit. The usual composition of denatured alcohol is 85-90 % rectified spirit + 10-15% methanol.

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