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  1. Which of the following vitamins contain nitrogen?
    1. Vitamin A
    2. Vitamin B
    3. Vitamin C
    4. Vitamin D
Correct Option: B

Vitamin B contains nitrogen atoms that allow them to participate in regulating metabolism. For example, Vitamin B3 is a water soluble vitamin containing compound Niacin or Niacinamide, a nitrogen containing vitamin.



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