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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Identify the main product of the reaction: 40% 1% H−C ≡ C−H+H−O→1% HgSOA440% HA2SOA4 _____.

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प्रश्न

Identify the main product of the reaction:

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

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उत्तर

Alkynes react with water in the presence of 40% sulphuric acid and 1% mercuric sulphate to form aldehydes or ketones i.e. carbonyl compounds.

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Notes

In the textbook question is wrong.

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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 3. d. | पृष्ठ २६०

संबंधित प्रश्‍न

Write the balanced chemical reaction to get benzene from Phenol.


Identify the main product of the reaction:

\[\ce{HC ≡ C - CH3 ->[H2][Pd-C/quinoline]}\] _______.


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


Name two reagents used for acylation of benzene.


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?

Identify the compound (A) in the following reaction


Which of the following compounds will not undergo Friedal – crafts reaction easily ? (NEET)


An alkane is obtained by decarboxylation of sodium propionate. Same alkane can be prepared by ______.


Identify the compound 'Z' in the following reaction

\[\ce{C2H6O ->[Al2O3][623 K] X ->[O3] Y ->[Zn/H2O] (Z)}\]


Write short notes on ortho, para directors in aromatic electrophilic substitution reactions.


Write the chemical equations for combustion of propane.


How does Huckel rule help to decide the aromatic character of a compound?


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

4 – chlorotoluene


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

m - dinitro benzene


How will you convert ethyl chloride into ethane?


Write the structure of the following alkanes.

2, 3 – Dimethyl – 6 – (2 – methyl propyl) decane


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


Which of the following is NOT a hetero-aromatic compound?


A compound with molecular formula C4H4O has all the four carbon atom and the oxygen atom in the ring. It also has two carbon-carbon double bonds. The compound is ____________.


Phenol on distillation with zinc dust gives ____________.


Direct bromination of benzene with excess reagent results in the formation of ____________.


Which of the following compounds on bromination yields ?


Arenes on treatments with chlorine in the presence of ferric chloride as a catalyst undergo what type of reaction?


Identify the X and Y in the following reactions.


Read the following reaction and answer the questions given below.

\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{...........................}|\\
\ce{CH3 - C = CH2 + HBr ->[Benzoyl][peroxide] H3C - CH - CH2Br}\\
|\phantom{....................................}\\
\ce{CH3}\phantom{.................................}
\end{array}\]

  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.

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

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

Which of the following statement is NOТ correct for aromatic compounds?


Identify ortho and para-directing groups from the following:

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


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