Advertisements
Advertisements
प्रश्न
Identify the main product of the reaction:
\[\ce{H - C ≡ C - H + H - O ->[{40%} H2SO4][{1%} HgSO4]}\] _____.
Advertisements
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.

Notes
In the textbook question is wrong.
APPEARS IN
संबंधित प्रश्न
Write the balanced chemical reaction to get benzene from Phenol.
Identify A, B, C in the following reaction sequence:
\[\ce{CH3 - CH = CH2 ->[Br2/CCl4][room temperature] A ->[Zn] B ->[dil. alkaline][KMnO4] C}\]
Name two reagents used for acylation of benzene.
Identify the compound (A) in the following reaction

Which of the following compounds will not undergo Friedal – crafts reaction easily ? (NEET)
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
An alkane is obtained by decarboxylation of sodium propionate. Same alkane can be prepared by ______.
2 – butyne on chlorination gives ______.
Write short notes on ortho, para directors in aromatic electrophilic substitution reactions.
How is propyne prepared from an alkylene dihalide ?
Describe the mechanism of Nitration of benzene.
Suggest a simple chemical test to distinguish propane and propene.
Suggest the route for the preparation of the following from benzene.
3 – chloro nitrobenzene
Suggest the route for the preparation of the following from benzene.
4 – chlorotoluene
What happens when Isobutylene is treated with acidified potassium permanganate?
Write the structure of the following alkanes.
5 – (2 – Ethyl butyl) – 3, 3 – dimethyldecane
Complete the following:
\[\begin{array}{cc}
\ce{CH2 - CH2 ->[Zn/C2H5OH]}\\
|\phantom{.......}|\phantom{..............}\\
\ce{Br}\phantom{.....}\ce{Br}\phantom{..............}
\end{array}\]
When acetylene is passed through red hot iron tube at 873 K, ____________ is/are obtained as product/s.
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 ____________.
Which of the following is NOT alicyclic compound?
Sodium benzoate on decarboxylation gives ____________.
Which of the following molecules has shortest C - C bond length?
Identify the X and Y in the following reactions.

Read the following reaction and answer the questions given below.
\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{............................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide] CH3 - CH - CH2Br}\\
|\phantom{....................................}\\
\ce{CH_3}\phantom{.................................}
\end{array}\]
- Write the IUPAC name of the product.
- State the rule that governs the formation of this product.
Read the following reaction and answer the questions given below.
\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{...........................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide] CH3 - CH - CH2Br}\\
|\phantom{....................................}\\
\ce{CH3}\phantom{.................................}
\end{array}\]
- Write the IUPAC name of the product.
- State the rule that governs the formation of this product.
