NEET Solved Paper 2017 Question 13

Question: Which one is the correct order of acidity?

Options:

A) $ CH _3=CH _3>CH _2=CH _2>CH _3-C=CH>CH=CH $

B) $ CH _2=CH _2>CH _3-CH=CH _2>CH _3-C\equiv CH> $ $ CH\equiv CH $

C) $ CH\equiv CH>CH _3-C\equiv CH>CH _2=CH _2>CH _3-CH _3 $

D) $ CH\equiv CH>CH _2=CH _2>CH _3-C\equiv CH>CH _3-CH _3 $

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Answer:

Correct Answer: D

Solution:

  • Correct order is $ \underset{\begin{smallmatrix} (Two,acidic \\ hydrogens) \end{smallmatrix}}{\mathop{H-C\equiv C-H>}},\underset{\begin{smallmatrix} (One,acidic \\ hydrogen) \end{smallmatrix}}{\mathop{H _3C-C\equiv C-H>}},H _2C=CH _2 $ $ >CH _3-CH _3 $