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Q.

The increasing order of pKa for the following phenols is 
(1) 2, 4-Dinitrophenol 
(2) 4 - Nitrophenol 
(3) 2, 4, 5-Trimethylphenol 
(4) Phenol 
(5) 3- Chlorophenol 
Choose the correct answer from the option given below:

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a

3, 4, 5, 2, 1

b

1, 5, 2, 4, 3

c

3, 5, 4, 2, 1

d

1, 2, 5, 4, 3

answer is C.

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