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Question

Coal tar belongs to a class of drugs known as:
  1. aldehydes
  2. alcohols
  3. keratoplastics
  4. none of above

A
none of above
B
aldehydes
C
alcohols
D
keratoplastics
Solution
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Coal tar belongs to a class of drugs known as keratoplastics. It works by causing the skin to shed dead cells from its top layer and slow down the growth of skin cells. This effect decreases scaling and dryness. Coal tar can also decrease itchiness from these skin conditions.

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