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Q.

Phenol is prepared by Dow's process. Conditions involved in Dow’s process of preparing phenol are

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a

aq.NaOH, 623K, 1 atm  

b

aq.NaOH, 358K, 320 atm

c

aq.NaOH, 443K, 1 atm 

d

aq.NaOH, 623K, 320 atm

answer is D.

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Detailed Solution

 

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Chloro benzene Is least reactive towards ArSN reaction. It is stable due to resonance. 

C-Cl bond acquires double bond character. 

So to convert  C6H5-Cl to C6H5-OH about 623 K and 300 atm -320 atm are required.

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