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Which of the following has lowest meltin...

Which of the following has lowest melting point?

A

`CH_(3)-underset(CH_(3))underset(|)(CH)-overset(O)overset(||)(C)-NHCH_(3)`

B

`CH_(3)-CH_(2)-overset(O)overset(||)(C)-NH-CH_(3)`

C

`CH_(3)CH_(2)CH_(2)-underset(O)underset(||)(C)-NH-CH_(3)`

D

`CH_(3)-overset(O)overset(||)(C)-underset(CH_(3))underset(|)(N)-CH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
It has no hydrogen bonded to nitrogen, cannnot form hydrogen bonds with other molecule, lowest boiling and melting points from the given list of amides.
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A2Z-SOME BASIC PRINCIPALS OF ORGANIC CHEMISTRY-Acid And Basic Strength
  1. Arrange the following in increasing order of basic strength

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  2. Choose the strongest base among the following:

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  3. Which of the following has lowest melting point?

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  4. Select the basic strength order of following molecules

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  5. What is formed in the above reaction?

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  6. Consider thiol anion (RS^(Theta)) and alkoxy anion (RO^(Theta)). Which...

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  7. The correct basic strength order of the following anions is:

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  8. Which of the following has the most acidic hydrogen ?

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  9. Which of the following cannot be a base?

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  10. Arrange above phenol in increasing order of pK(a) value:

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  11. Arrange the following compounds in decreasing order of their acidic st...

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  12. Which compound would be least soluble in water?

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  13. Identify the correct order of boiling points of the following compound...

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  14. Most acidic hydrogen is present in:

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  15. The decreasing order of electron density on the ring is:

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  16. The correct order of increasing basicity of the given conjugate bases ...

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  17. Among the following compounds, the most acid is:

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  18. Correct dipole moment order is: underset((p))(CH(2)=CH-Cl),underset(...

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  19. Which of the following compound is the strongest base?

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  20. Arrange in the order of increasing acidic strengths.

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