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  3. 11th Class
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11th Class Biology Sample Paper Biology Sample Paper-1

  • question_answer
    How many carbon atoms are there in substances labelled as P, Q, R and S respectively in the given representation of Krebs' cycle? Krebs-cycle

    A) P-4       Q-3      R-6       S-4

    B) P-3       Q-4      R-4       S-6

    C) P-4       Q-3      R-4       S-6

    D) P-3       Q-4      R-6       S-4

    Correct Answer: D

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