10.9 Identify A, B, C, D, E, R and R1 in the following:
1st reaction :-
2nd reaction :-
3rd reaction :-
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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