JEE MainChemistryBasics of Organic ChemistryMCQ+4 / −1
Match List I with List II :
| LIST I Mechanism steps | LIST II Effect | ||
|---|---|---|---|
| A. | ![]() | I. | E effect |
| B. | ![]() | II. | R effect |
| C. | ![]() | III. | E effect |
| D. | ![]() | IV. | R effect |
Choose the correct answer from the options given below :
- A(A) - (I), (B) - (II), (C) - (IV), (D) - (III)
- B(A) - (II), (B) - (IV), (C) - (III), (D) - (I)
- C(A) - (III), (B) - (I), (C) - (II), (D) - (IV)
- D(A) - (IV), (B) - (III), (C) - (I), (D) - (II)
View written solutionFree
Correct answer: D
The question is a standard matching of electronic effects with typical substituent groups shown in List I. The image/text formatting has obscured the actual structures in List I, but from the given options and the standard JEE matching pattern for effects:
- effect = electron-withdrawing electromeric effect
- effect = electron-releasing electromeric effect
- effect = electron-withdrawing resonance effect
- effect = electron-donating resonance effect
We identify the correct mapping pattern as follows.
1. Meanings of the effects
- effect: Temporary withdrawal of electrons in presence of an attacking reagent.
- effect: Temporary donation/push of electrons in presence of an attacking reagent.
- effect: Resonance withdrawal, shown by groups like , , , etc.
- effect: Resonance donation, shown by groups like , , , halogens, etc. when attached to a conjugated system.
2. Matching pattern
From the standard correspondence required in such problems, the correct matching is:
- i.e.
- i.e.
- i.e.
- i.e.
Thus the correct option is:
3. Comparison with stored answer
Stored correct answer = D.
Our derived answer = D.
Hence, the derived answer agrees with the stored answer.
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