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The decreasing order of the anti-knockin...

The decreasing order of the anti-knocking value of octane number of the following is: (I) `CH_(4)` (II) `C_(2)H_(6)` (III) `C_(3)H_(8)` (IV) `C_(4)H_(10)`

A

(a) (I) > (II) > (III) > (IV)

B

(b) (IV) > (III) > (II) > (I)

C

(c) (I) > (III) > (II) > (IV)

D

(d) (IV) > (II) > (III) > (I)

Text Solution

Verified by Experts

The correct Answer is:
A
As the number of C atoms increases, knocking power increases or anti-knocking power decreases.
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Decreasing order C-C bond length is (I) C_(2)H_(4) , (II) C_(2)H_(2) (III) C_(6)H_(6) , (IV) C_(2)H_(6)

Decreasing order of C-C bond length is (I) C_2H_4 (II) C_2H_2 (III) C_6 H_6 (IV) C_2H_6

Arrange the following alkanes in the increasing order of their boiling points: (i) n-C_(4)H_(10) (ii) 1-C_(5)H_(12) (iii) n-C_(3)H_(8) (iv) n-C_(6)H_(14)

C_(2)H_(4),C_(4)H_(10), C_(3)H_(8),CH_(4)

The correct order of reactivity of the compounds (I) C_(6)H_(5)H_(2)(Br) , (II) C_(6)H_(5)CH(C_(6)H_(5))Br , (III) C_(6)H_(5)CH(CH_(3))Br , (IV) C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br in the increasing order of reactivity in S_(N^(2)) reactions is

The decreasing order of reactivity of the following compounds in S_(N)1 reactions is _________. (i) C_(6)H_(5)CH_(2)Br" " (ii) C_(6)H_(5)CH(C_(6)H_(5)Br (iii) C_(6)H_(5)CH(CH_(3)Br" "(iv) C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br

Knowledge Check

  • Decreasing order C-C bond length is (I) C_(2)H_(4) , (II) C_(2)H_(2) (III) C_(6)H_(6) , (IV) C_(2)H_(6)

    A
    `IVgtIIIgtIgtII`
    B
    `IgtIIgtIVgtIII`
    C
    `IIgtIgtIVgtIII`
    D
    `IVgtIgtIIIgtII`.

  • Decreasing order of C-C bond length is (I) C_2H_4 (II) C_2H_2 (III) C_6 H_6 (IV) C_2H_6

    A
    IVgt IIgt I gt II
    B
    I gt II gt IV gt III
    C
    II gt I gt IV gt III
    D
    IV gt I gt III gt II.

  • The correct order of reactivity of the compounds (I) C_(6)H_(5)H_(2)(Br) , (II) C_(6)H_(5)CH(C_(6)H_(5))Br , (III) C_(6)H_(5)CH(CH_(3))Br , (IV) C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br in the increasing order of reactivity in S_(N^(2)) reactions is

    A
    (I) lt (II) lt (III) lt (IV)
    B
    (IV) lt (III) lt (II) lt (I)
    C
    (I) lt (III) lt (II) lt (IV)
    D
    (IV) lt (II) lt (III) lt (I)
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