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# Ethyl alcohol to which another liquid has been added to make it unfit for use as beverage is called denatured alcohol. Ethyl alcohol denatured by adding methyl alcohol, is highly poisonous. Answer the following questions: (i) Mention another way by which alcohol is denatured. (ii) Explain why methanol is highly toxic to human beings? (iii) How is methanol prepared on large-scale? Give its two important uses.

(ii) In human body methanol is oxidized to methanoic acid $(HCOOH)$ which is highly toxic
$CO +2H_2 \longrightarrow CH_3$