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Q: ____ is prepared by treating acetaldehyde with sulphur dioxide, hydrochloric acid or zinc chloride.
  • A. Nitrazepam
  • B. Paraldehyde
  • C. Methohexital sodium
  • D. Chloral hydrate
Correct Answer: Option B - Paraldehyde is prepared by treating acetaldehyde with sulphur dioxide, hydrochloric acid or zinc chloride. Paraldehyde is classified as central nervous system (CNS) depressant.
B. Paraldehyde is prepared by treating acetaldehyde with sulphur dioxide, hydrochloric acid or zinc chloride. Paraldehyde is classified as central nervous system (CNS) depressant.

Explanations:

Paraldehyde is prepared by treating acetaldehyde with sulphur dioxide, hydrochloric acid or zinc chloride. Paraldehyde is classified as central nervous system (CNS) depressant.