What is the percentage of formaldehyde in formalin?

What is the percentage of formaldehyde in formalin?
  1. $60 \%$
  2. $40 \%$
  3. $10 \%$
  4. $20 \%$

Solution

Correct answer is $40 \%$ The percentage of formaldehyde in formalin is $40 \%$ $10 \mathrm{ml}$ formalin contains $40 \mathrm{ml}$ formaldehyde and $60 \mathrm{ml}$ of water.

Asked in: MHT CET 2020 (12 Oct Shift 1)

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