assertion:-1-ethylene cyclopen†an e \xrightarrow{H_2O/H^+} A 1-methyl cyclohex-1-ene\xrightarrow[{2)NABH_4/OH^-}]{1)Hg(OCOCH_3)_2,H_2O} B major product A and B are same reason:-both the reaction involves rearrangement of carbocation intermediate

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Q. Assertion :Addition of

H C l

3

-methyl-

1

-butene gives

2

-chloro-

2

-methyl butane as the major product. Reason: Rearrangement of carbocation to more stable carbocation leads to formation of major product.

Q. Which of the following statement(s) is/are true for the following reaction?

(1) It involves a carbocation intermediate
(2) Rearrangement is due to

S_{N} 1

mechanism.
(3) It proceeds via

S_{N} 2

pathway.
(4) It involves neighbouring group participation.

Q. Assertion :Treatment of

3

-methyl-

1

-butene with

H g (C H_{3} C O O)_{2} - H_{2} O

followed by reduction with

N a B H_{4}

gives

2

-methyl-

2

-butanol. Reason: The reaction proceeds through a cyclic mercurinium ion reactive intermediate.

Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.
Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Which of the following is the correct product of the above reaction:

1) 1-ethyl-3-methyl cyclohex-1-ene

2) 1-ethyl-3-methyl cyclohexanol

3) 1-methyl-3-ethyl cyclohex-1-ene

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