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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Identify A, B, C in the following reaction sequence: CHA3−CH=CHA2→room temperatureBrA2/CClA4A→ZnB→KMnOA4dil⋅alkalineC

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प्रश्न

Identify A, B, C in the following reaction sequence:

\[\ce{CH3 - CH = CH2 ->[Br2/CCl4][room temperature] A ->[Zn] B ->[dil. alkaline][KMnO4] C}\]

रासायनिक समीकरणे/रचना
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उत्तर

\[\begin{array}{cc}
\ce{H\phantom{....}H\phantom{...............}}\\
|\phantom{.....}|\phantom{...............}\\
\ce{CH3\underset{Propene}{- CH =} CH2 ->[Br2/CCl4][room temperature] CH3 - C - C - H ->[Zn] CH3 \underset{\overset{Propene}{(B)}}{- CH = C}H2 ->[dil.alkaline][KMnO4] CH3 - CH - CH2}\\
\phantom{........................................}|\phantom{.....}|\phantom{..............................................}|\phantom{......}|\phantom{..}\\
\ce{\phantom{.......................................}\underset{\overset{1,2-Dibromopropane}{(A)}}{Br\phantom{...} Br}\phantom{...........................................}\underset{\overset{Propane-1,2-diol}{(C)}}{OH\phantom{...}OH}}\end{array}\]

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पाठ 15: Hydrocarbons - Exercises [पृष्ठ २६०]

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बालभारती Chemistry [English] Standard 11 Maharashtra State Board
पाठ 15 Hydrocarbons
Exercises | Q 5. | पृष्ठ २६०

संबंधित प्रश्‍न

Name the following:

The hydrocarbon said to possess carcinogenic property.


Predict the possible product of the following reaction.

bromination of phenol


Predict the possible product of the following reaction.

nitration of toluene


Identify the main product of the reaction:

\[\ce{H - C ≡ C - H + H - O ->[{40%} H2SO4][{1%} HgSO4]}\] _____.


Identify giving reason whether the following compound is aromatic or not.


Identify giving reason whether the following compound is aromatic or not.


Read the following reaction and answer the questions given below:

  1. Write the name of the reaction.
  2. Identify the electrophile in it.
  3. How is this electrophile generated?

Major product of the below mentioned reaction is, \[\ce{(CH3 )2 C = CH2 ->[ICI]}\]


Consider the nitration of benzene using mixed con H2SO4 and HNO3 if a large quantity of KHSO4 is added to the mixture, the rate of nitration will be ______.


is


Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?


Give IUPAC name for the following compound.

Ethyl isopropyl acetylene


Suggest the route for the preparation of the following from benzene.

Bromo benzene


Write the structure of the following alkanes.

5 – (1, 2 – Dimethyl propyl) – 2 – methylnonane


When acetylene is passed through red hot iron tube at 873 K, ____________ is/are obtained as product/s.


Which among the following compounds has highest boiling point?


−Cl group is ____________.


According to Huckel rule, a cyclic π molecular orbital formed by overlap of p orbitals must contain ____________ p electrons.


Which of the following reagents can bring about following conversion?

\[\ce{But-1-ene -> Butan-2-ol}\]


Which of the following compounds on bromination yields ?


Read the following reaction and answer the questions given below. 

\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{...........................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide]CH3 - CH - CH2Br}\\
|\phantom{....................................}\\
\ce{CH3}\phantom{.................................}\\
\end{array}\]

  1. Write the IUPAC name of the product.
  2. State the rule that governs the formation of this product.

Read the following reaction and answer the questions given below.

\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{............................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide] CH3 - CH - CH2Br}\\
|\phantom{....................................}\\
\ce{CH_3}\phantom{.................................}
\end{array}\]

  1. Write the IUPAC name of the product.
  2. State the rule that governs the formation of this product.

Read the following reaction and answer the questions given below.

\[\begin{array}{cc}
\phantom{..........................}\ce{CH3}\\\phantom{........................}|\\\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide]  CH3 - CH - CH2Br}\\
|\phantom{......................................}\\
\ce{CH3}\phantom{....................................}\end{array}\]

  1. Write the IUPAC name of the product.
  2. State the rule that governs the formation of this product.

Identify ortho and para-directing groups from the following:

\[\ce{\underset{I}{–CHO},\underset{II}{–NHCOCH3},\underset{III}{–OCH3},\underset{IV}{–SO3H}}\]


Which of the following is most stable?


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