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The correct order for acid strength of compounds : CH ≡ CH, CH 3 –C ≡ CH and CH 2 = CH 2 is as follows

1. CH ≡ CH > CH 2 = CH 2 > CH 3 – C ≡ CH
2. CH 3 – C ≡ CH > CH 2 = CH 2 > HC ≡ CH
3. HC ≡ CH > CH 3 – C ≡ CH > CH 2 = CH 2
4. CH 3 – CH ≡ CH > CH ≡ CH > CH 2 = CH 2

Correct answer: HC ≡ CH > CH 3 – C ≡ CH > CH 2 = CH 2

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