help please and thank you Multiple Choice questions (28?) 1 Which of the followi

Question

help please and thank you Multiple Choice questions (28?) 1 Which of the following compounds is the most polar one? 3. Which of the following ketones/aldehydes has the most acid a hydrogen? 4. Which of the following ketones/aldehydes has the highest enol content? 5. Which of the following combinations is suitable for mixed aldol condensation? 6. Which of the following compounds is an alpha,beta-unsaturated aldehyde? 7 Which of following compounds is the most acidic one? 13. Please rank the following compounds in order of decreasing acidity. A I > II > III > IV B. III > II > I > IV C IV > II > III > I D I > lll > IV > II

Explanation / Answer

There are more than 1 question. I will answer question no.3 for you since it is a good logical question.
Answer for question 1 is B

3.
Answer is A.
in B there are no alpha hydrogen.
To see the acidic strength, remove the acidic hydrogen and form the anion.
When we form anion, there is two -M effect in A but there are only 1 in C and D.
So, anion A is most stable and hence more acidic.

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