A)
B)
C)
D)
सही उत्तर: B
इसलिए, वह यौगिक जिसे प्रोटोनेट करना सबसे कठिन है, फ़ीनॉल है।
इसलिए, सही उत्तर विकल्प (B) है।
नोट: यह ध्यान देना चाहिए कि ऐल्कोहॉलों $\left( {R - O - R} \right)$ में प्रोटोनेशन आमतौर पर आसान होता है, सिवाय फ़ीनॉल के।
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