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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Propane nitrile can be prepared by heating ____________

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प्रश्न

Propane nitrile can be prepared by heating ____________

पर्याय

  • ethyl bromide with alcoholic KCN

  • propyl bromide with alcoholic KCN

  • ethyl bromide with alcoholic AgCN

  • propyl bromide with alcoholic AgCN

MCQ
रिकाम्या जागा भरा
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उत्तर

ethyl bromide with alcoholic KCN

Explanation:

\[\ce{\underset{\text{Ethyl bromide}}{CH3CH2Br}->[Alc.KCN,\Delta][-H2O]\underset{\text{Propane nitrile}}{CH3CH2CN}}\]

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पाठ 10: Halogen Derivatives - Multiple choice questions

संबंधित प्रश्‍न

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 products.


Name the reagent used to bring about the following conversion.

Bromoethane to ethoxyethane


Name the reagent used to bring about the following conversion.

Ethyl bromide to ethyl isocyanide


Give reasons:

Haloarenes are less reactive than haloalkanes.


Convert the following:

Propene to propan-1-ol


Convert the following:

2-Chloropropane to propan-1-ol


Convert the following:

tert-Butyl bromide to isobutyl bromide


Observe the following and answer the question given below.

Name the type of halogen derivative.


Observe the following and answer the question given below.

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


The following will react faster by SN1 mechanism


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


Write the correct order of increasing ease of dehydrohalogenation.

\[\ce{\underset{\text{(I)}}{CH3 - CH2 - CH2 - Cl}}\]

\[\ce{\underset{\text{(II)}}{CH3 - CH(Cl) - CH3}}\]

\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3-C-Cl}\phantom{...}\\
|\\
\ce{CH3}\\
\ce{(III)}
\end{array}\]


Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.


Explain aqueous alkaline hydrolysis of tert. butyl bromide.


What is dehydrohalogenation? State the rule for the formation of the preferred product of dehydrohalogenation.


Which of the following is least reactive towards nucleophilic addition?


Nitroalkanes are obtained in laboratory from primary or secondary alkyl halides by the action of ______.


What type of hybridisation is present in carbocation formed during the alkaline hydrolysis of 1- bromo-1- phenyl ethane?


Identify major product 'B' in the following reaction.

\[\ce{But-1-ene ->[HBr][Peroxide] A ->[AgCN][\Delta] B}\]


Write the product formed when alkyl halide reacts with silver nitrite.


The order of reactivities of the following alkyl halides for an SN2 reaction is ______.


With which halogen the reactions, of alkanes are explosive?


Observe the following and answer the questions given below:

Name the type of halogen derivative.


Observe the following and answer the question given below:

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


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

\[\ce{2-Bromobutan ->[alc. KOH] A ->[][Br2] B ->[][NANH2] C}\]


Complete the following reaction giving major product.

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


Give a reason for the following:

Ethoxy ethane with conc. HI at 373 K gives C2H5OH and CH3I but not CH3OH and C2H5I.


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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