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Arrange the following increasing order o...

Arrange the following increasing order of number of hyperconjugation structures.
(I) `CH_(3)-overset(.)(C)H-CH_(3)`
(II) `CH_(3)-overset(CH_(3))overset(|)CH-overset(.)(C)H-CH_(3)`
(III) `CH_(3)-overset(CH_(3))overset(|)underset(.)C-CH_(3)`

A

`I lt II lt III`

B

`II lt I lt III`

C

`III lt II lt I`

D

`II lt III lt I`

Text Solution

Verified by Experts

The correct Answer is:
B
Free radicals also show hyperconjugation effect as

Hence the number of hyperconjugation structure is equal to the number of `alpha-H`. Hence, `III` has maximum `(9)` following by `I(6)` and the last `(II) (4)` hyperconjugation structure.
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Arrange the following compound is decreasing order of macheophillic addection reation (I) CH_(3)-overset(O)overset(||)(C)-CH_(3) (II) CH_(3)-overset(O)overset(||)(C)-CI (III) CH_(3)-overset(O)overset(||)(C)-NH_(2) (Iv) CH_(3)-overset(O)overset(||)(C)-OH (V) CH_(3)-overset(O)overset(||)(C)-O-overset(O)overset(||)(C)-CH_(3)

CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH=CH-CH_(3)overset(H-Cl)(to) ?

IUPAC name of C_(2)H_(5)-overset(C_(2)H_(5))overset(|)CH-overset(Cl)overset(|)CH-overset(CH_(3))overset(|)CH-CH_(2)-CH_(2)-CH_(3)

Write IUPAC Name CH_(3)-overset(C_(2)H_(5))overset(|)underset(CH_(3))underset(|)C-overset(CH_(3))overset(|)underset(H)underset(|)C-C-=C-CH_(3)

Among the following structures I to IV , it is true that: (I) C_(2)H_(5)-overset(CH_(3))overset(|)CH-C_(3)H_(7), (II) CH_(3)-overset(O)overset(||)C-overset(CH_(3))overset(|)CH-C_(2)H_(5) (III) H-overset(H)overset(|)underset(H)underset(|)C^(+), (IV) C_(2)H_(5)-overset(CH_(3))overset(|)CH-C_(2)H_(5)

CH_(3)-overset(O)overset(||)C-CH_(3) " and " CH_(3)-overset(O)overset(||)(C)-H is differentiated by:

CH_(3)-underset(CH_(3))underset(|)(C)=CH-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)

Arrange the following in the increasing order of acidic strength (I) H_(2)CO (II) CH_(3)CHO (III) C_(6)H_(5)CH_(2)CHO (IV) CH_(3)-overset(O)overset(||)C-CH_(2)-overset(O)overset(||)C-CH_(3)

Arrange the following compounds in decreasing order of nucleophilic addition reaction : CH_(3)-underset("I")overset(O)overset(||)C-CH_(3)" "CH_(3)-underset("II")overset(O)overset(||)C-Cl" "CH_(3)-underset("III")overset(O)overset(||)C-OH " "CH_(3)-overset(O)overset(||)underset(IV)C-NH_2 " "CH_(3)-overset(O)overset(||)C-underset(V)O-overset(O)overset(||)C-CH_(3)

The stability of given free radicals in decreasing order is (i) CH_(3)-overset(.)(C)H_(2) , (ii) CH_(3)-Coverset(.)(H)-CH_(3) (iii) CH_(3)-underset(CH_(3))underset(|)overset(.)(C)-CH_(3) , (iv) overset(.)(C)H_(3)

A2Z-SOME BASIC PRINCIPALS OF ORGANIC CHEMISTRY-Section D - Chapter End Test
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  6. Among the following compound which can be dehydrated very easily is :

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  10. Which one of the following compounds is most acidic

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