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  1. Which of the following elements are present in all protein
    1. Carbon
    2. Hydrogen
    3. Oxygen
    4. Nitrogen
    Code:
    1. 2 & 3
    2. 1,2 and 4
    3. 1, 3 and 4
    4. 1, 2, 3 and 4
Correct Option: D

N/A



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