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The addition of HBr to 1-butene gives a mixture of products A, B and C (A) (B) (C) CH3 – CH2 – CH2 – CH2 – Br The mixture consists of: - Chemistry

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प्रश्न

The addition of HBr to 1-butene gives a mixture of products A, B and C

(A)
(B)
(C) CH3 – CH2 – CH2 – CH2 – Br

The mixture consists of:

विकल्प

  • A and B as major and C as minor products

  • B as major, A and C as minor products

  • B as minor, A and C as major products

  • A and B as minor and C as major products

MCQ
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उत्तर

A and B as major and C as minor products

Explanation:

The reaction follows Markovnikov’s rule leading to giving 2° carbocation as an intermediate.

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अध्याय 13: Hydrocarbons - Multiple Choice Questions (Type - I) [पृष्ठ १६२]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 11
अध्याय 13 Hydrocarbons
Multiple Choice Questions (Type - I) | Q 5 | पृष्ठ १६२

संबंधित प्रश्न

Write IUPAC name of the product obtained by the ozonolysis of the following compound.

Pent-2-ene


An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.


Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?


Write a chemical equation for combustion reaction of the following hydrocarbon:

Butane


Write a chemical equation for combustion reaction of the following hydrocarbon:

Hexyne


Arrange the halogens F2, Cl2, Br2, I2, in order of their increasing reactivity with alkanes.


Arrange the following hydrogen halides in order of their decreasing reactivity with propene.


Which of the following alkenes on ozonolysis give a mixture of ketones only?

(i) CH3 – CH = CH – CH3
(ii) \[\begin{array}{cc}
\ce{CH3 - C - CH = CH2}\\
|\phantom{.......}\\
\ce{CH3}\phantom{....}
\end{array}\]
(iii)
(iv) \[\begin{array}{cc}
\phantom{...................}\ce{CH3}\\
\phantom{..............}/\\
\ce{(CH3)2 C = C}\\
\phantom{..............}\backslash\\
\phantom{...................}\ce{CH3}
\end{array}\]

In the presence of peroxide addition of HBr to propene takes place according to anti Markovnikov’s rule but peroxide effect is not seen in the case of HCl and HI. Explain.


An alkene 'X' on ozonolysis produces two moles of isovaleraldehyde. Predict the IUPAC name of the alkene. 


Which of the following reagent is used for the following reaction?

\[\ce{CH3CH2CH3 ->[?] CH3CH2CHO}\]


The major product formed in the following reactions is:


Select schemes A, B, C out of

(I) acid catalysed hydration

(II) HBO

(III) oxymercuration-demercuration


In the presence of peroxide, HCl and HI do not give anti-Markovnikov's addition of alkenes because ______.


An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write the IUPAC name of ‘A’.


An alkene ‘A’ contains three C-C, eight C-H σ bonds and one C-C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write the IUPAC name of ‘A’.


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