MCQ
In which of the following nitrogen is invariably present?
- AFat
- BCarbohydrate
- ✓Protein
- DStarch
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Assertion $(A)$ : Vinyl halides do not undergo nucleophilic substitution easily.
Reason $(R)$ : Even though the intermediate carbocation is stabilized by loosely held $p-$ electrons, the cleavage is difficult because of strong bonding.