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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

HCl is added to a hydrocarbon ‘A’ (CA4HA8) to give a compound ‘B’ which on hydrolysis with aqueous alkali forms tertiary alcohol ‘C’ (CA4HA10O). Identify ‘A’ ,‘B’ and ‘C’.

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प्रश्न

HCl is added to a hydrocarbon ‘A’ \[\ce{(C4H8)}\] to give a compound ‘B’ which on hydrolysis with aqueous alkali forms tertiary alcohol ‘C’ \[\ce{(C4H10O)}\]. Identify ‘A’ ,‘B’ and ‘C’.

रासायनिक समीकरणे/रचना
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उत्तर

\[\begin{array}{cc}
\phantom{...}\ce{CH3}\phantom{..............................}\ce{CH3}\phantom{..............................}\ce{CH3}\\
|\phantom{..................................}|\phantom{.................................}|\\
\ce{\underset{(A)}{\underset{(C4H8)}{\underset{2-Methylprop-1-ene}{H3C - C = CH2 + HCl}}} ->[Markovnikov][rule] H3C - C - CH3 ->[KOH (aq_.)Hydrolysis][\Delta] H3C - C - CH3}\\
\phantom{...................................}|\phantom{.................................}|\\
\phantom{.....................................}\ce{\underset{(B)}{\underset{2-Chloro-2-methylpropane}{Cl}}\phantom{...............}\ce{\underset{(C)}{\underset{(C4H10O)}{\underset{2-Hydroxy-2-methylpropane}{OH}}}}}
\end{array}\]

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पाठ 10: Halogen Derivatives - Exercises [पृष्ठ २३३]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 10 Halogen Derivatives
Exercises | Q 7. i. | पृष्ठ २३३

संबंधित प्रश्‍न

from the following pair would undergo SN2 faster from the other?

  1.    

from the following pair would undergo SN2 faster from the other?

a. CH3CH2CH2I      b. CH3CH2CH2Cl


Complete the following reaction giving major product.

\[\begin{array}{cc}\ce{CH3\phantom{................}}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3\phantom{................}}
\end{array}\]


Name the reagent used to bring about the following conversion.

Ethyl bromide to ethyl isocyanide


Name the reagent used to bring about the following conversion.

Chlorobenzene to biphenyl


Arrange the following in the increasing order of boiling points.

  1. 1-Bromopropane
  2. 2- Bromopropane
  3. 1- Bromobutane
  4. 1-Bromo-2-methylpropane

Distinguish between SN1 and SN2 mechanism of substitution reaction.


Convert the following:

Ethanol to propane nitrile


Complete the following reaction sequence by writing the structural formulae of the organic compound 'A', 'B' and 'C'.

\[\ce{2-Bromobutane->[Alc.KOH]A->[][Br2]B->[][NaNH2]C}\]


Complete the following reaction sequence by writing the structural formulae of the organic compound 'A', 'B' and 'C'.

\[\ce{Isopropyl alcohol ->[\triangle][PBr3] A ->[][NH3 excess] B}\]


Observe the following and answer the question given below.

Comment on the bond length of C–X bond in it.


Observe the following and answer the question given below.

Can it react by SN1 mechanism? Justify your answer.


Propane nitrile can be prepared by heating ____________


Nucleophilic substitution reaction of 2, 4-dinitrochlorobenzene is faster than p-nitrochlorobenzene. Give reason.


Explain. Aryl halides are less reactive than alkyl halides towards nucleophilic substitution reactions.


In alkaline hydrolysis of tertiary butyl bromide, ____________.


Which of the following is least reactive towards nucleophilic addition?


\[\ce{C6H5CH2Cl + KCN(alc) -> X + Y}\]

Compounds X and Y are ____________.


Which of the following carbocation is the most stable?


The SN2 reaction of a compound containing an asymmetric carbon atom always gives ____________.


The major product formed when 2-bromobutane is treated with alcoholic KOH is ______.


Complete the following reaction giving a major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl->[Na/dry ether]A}\\
|\phantom{..................}\\
\ce{CH3}\phantom{................}
\end{array}\]


Complete the following reactions giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}
\end{array}\]


Define and explain the SN1 mechanism with a suitable example.


What is the action of following on ethyl bromide?

alcoholic sodium hydroxide


Complete the following reaction giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{...............}\\
|\phantom{..................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether]A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}
\end{array}\]


Complete the following reaction giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{................}\\
\end{array}\]


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