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Mass poisoning deaths associated with contaminated liquor are mainly caused by the presence of which substance?

1. Carbonic acid in the liquor
2. Ethyl alcohol in the liquor
3. Methyl alcohol in the liquor
4. Lead compounds in the liquor

Correct answer: Methyl alcohol in the liquor

Solution

Deaths from spurious/contaminated liquor are mainly due to methyl alcohol (methanol), which is metabolised to formaldehyde and formic acid causing blindness and death.

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