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Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Short Answer Type

31.

Write the various canonical forms of urea.

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32. With the help of hyperconjugation, write the increasing order of relative stabilities of the following alkenes:
CH₃ — CH = CH — CH₃, CH₂ ⁼ CH₂, CH₃ – CH = CH₂

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33. Why do carbocations undergo a variety of reactions?

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34.

What is the state of hybridisation of positively charged carbon of carbocation?

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35.

Write the formation of carbanion when acetylene is treated with sodamide in liquid ammonia.

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36.

How is triphenyl methyl anion generated?

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37.

Why are free radicals extremely reactive?

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38.

Tell the structure of:
(i) Free radical
(ii) Carbocation and
(iii) Carbanion.

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39.

Arrange CH₃, D – (CH₃)₃C –, (CH₃)₂CH, CH₃ – CH₂ – in decreasing order of +I effect.

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40.

Arrange the following:
$CH subscript 3 straight C with circled plus on top straight H subscript 2 comma space space straight C subscript 6 straight H subscript 5 straight C with plus on top straight H subscript 2 comma space space left parenthesis CH subscript 3 right parenthesis subscript 3 straight C with plus on top comma space CH subscript 2 space equals space CH space minus space straight C with plus on top straight H subscript 2$
in order of decreasing stability.

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