Identify P, Q, and R in the correct sequence of reactions shown below: a) b) c) d) e) Choose the correct answer from the options given below:





(A), (C), and (D) only
In the given sequence of reactions:
- **P** corresponds to the **starting compound**, which is the **amide derivative** formed from the reaction with acetic acid and aniline (option A).
- **Q** corresponds to **hydrazine** (N2H4) formed after the reaction with **HNO3 and H2SO4** (option C).
- **R** corresponds to the **final product**, which is an amide derivative formed after a further reaction step, similar to **P**, but with a different substituent (option D).
Thus, the correct sequence of reactions is: **(A), (C), (D)** (Option d).
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