Methanol is toxic because

  1. A. methanol coagulates the protoplasm
  2. B. methanol gets oxidised to methanal in liver which coagulates the protoplasm
  3. C. methanol gets oxidised to acetic acid in liver which coagulates the protoplasm
  4. D. methanol gets oxidised to CO in liver which coagulates the protoplasm

Correct Answer: B. methanol gets oxidised to methanal in liver which coagulates the protoplasm

Explanation

In the liver, methanol is oxidized by the enzyme alcohol dehydrogenase into methanal (formaldehyde), a highly toxic compound that rapidly reacts with cellular components and coagulates the protoplasm.

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