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Statement-I: Alkenes participate in addi...

Statement-I: Alkenes participate in addition reaction
Statement-II: Alkenes are unsaturated hydrocarbons

A

S-I & II are correct, S-II is correct explanation of S-I

B

S-I&II are correct, S-II is not correct explanation of S-I

C

S-I is true, but S-II is false.

D

S-I is false, ut S-II is true

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Assertion : Alkenes usually show addition reactions. Reason : Alkenes are unsaturated hydrocarbons having double bonds.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • An addition reaction over alkene causes

    A
    Increase of unsaturation number in product W.r.t. reactant
    B
    Decrease of unsaturation number in product w.r.t reactant
    C
    Formation of new bonds without breaking any bond
    D
    Both (2) and (3)

  • Statement-I: Alkenes are more reactive than alkynes towards HX. Statement-II: Alkyl carbocation is more stable tha vinyl carbocation.

    A
    S-I & II are correct, S-II is correct explanation of S-I
    B
    S-I&II are correct, S-II is not correct explanation of S-I
    C
    S-I is true, but S-II is false.
    D
    S-I is false, ut S-II is true

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    What are the reactive sites for addition reactions in unsaturated hydrocarbons? Give one example.

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    Why do alkynes undergo addition reactions while simple alkenes do not?

    Give reasons for the following: (a) Unsaturated hydrocarbons show addition reactions but not saturated hydrocarbons. (b) Carbon forms only covalent bonds.

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