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प्रश्न
What is the action of Zn – Hg / conc. HCl on propanone?
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उत्तर
Propanone on reduction with zinc-amalgam and concentrated hydrochloric acid gives propane
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संबंधित प्रश्न
Write the structures of A and B in the following reactions:
Write the structure of the product of the following reaction:
\[\ce{H3C - C ≡ C - H ->[Hg^{2+}, H2SO4]}\]
Complete the synthesis by giving missing starting material, reagent or product.
Write a note on ‘aldol condensation’.
What is the action of phenyl hydrazine on propanone?
What is the action of Sodium bisulphite on propanone?
Write only reactions for the preparation of benzophenone from benzonitrile.
Write chemical equation for the following:
Gatterman - Koch formylation
Write chemical equation for the following :
Rosenmund reduction
Answer the following in one sentence.
Write reaction showing conversion of ethanenitrile into ethanol.
Answer the following in one sentence.
Predict the product of the following reaction:
\[\ce{CH3 - CH2 - COOCH3->[i) AIH(i-Bu)_2][ii) H3O+]}\]?
Answer the following in one sentence.
Name the product obtained by reacting toluene with carbon monoxide and hydrogen chloride in presence of anhydrous aluminium chloride.
What is the action of following reagents on ethanoic acid?
sodalime/heat
What is the action of following reagents on ethanoic acid?
P2O5/heat
Write reactions for the following conversions.
Benzene to Benzaldehyde
The formation of aldehyde from an alkyl cyanide using SnCl2/conc.HCl is known as ____________.
In the formation of an aldol, α-carbon atom of one aldehyde molecule attaches to ____________ of another aldehyde molecule.
Catalyst used in Rosenmund reduction is ____________.
An acylchloride is hydrogenated over catalyst palladium on barium sulphate to form an aldehyde. This reaction is called as ______.
Which of the following alcohols needs acidic KMnO4 to convert it into aldehyde or ketone?
Which of the following represents Etard's reaction?
Rosenmund reduction of ____________ yields benzaldehyde.
Identify the compound obtained by side chain chlorination of toluene and hydrolysed further.
Identify the compound A and Bin following reaction.
\[\ce{CH3Cl ->[KCN(alc)][\Delta] A ->[2H2O][HCl] B + NH4Cl}\]
A reaction in which chromyl chloride in presence of CS2 converts methyl group of toluene to aldehydic group on acid hydrolysis is called _________.
Which among the following compounds is obtained when benzene is treated with CO and HCl in presence of catalyst anhydrous AlCl3 and Cu2Cl2 under high pressure?
Which of the following compounds does NOT undergo Friedel-Crafts reaction?
Chromyl chloride converts methyl group to a chromium complex, which on acid hydrolysis gives corresponding aldehyde. This reaction is called ____________.
Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): SO2 is reducing while TeO2 is an oxidising agent.
Reason (R): Reducing property of dioxide decreases from SO2 to TeO2.
Select the most appropriate answer from the options given below:
Which of the following reaction is shown by alkynes?
Which of the following on heating with aqueous KOH, produces acetaldehyde?
Z is:
Ozonolysis of 2, 3 dimethyl but-2-ene, followed by decomposition by Zn dust and water gives ______.
What is the action of hydrogen cyanide on the following?
Benzaldehyde
Write Stephen reaction for the preparation of aldehyde.
How butanone is prepared from alcohol?
How are the following compound obtained by hydration of alkenes?
Isopropyl alcohol
How are the following compound obtained by hydration of alkenes?
tert-butyl alcohol
How acetone is prepared from nitriles using Grignard reagent?
Write preparation of propanone by using ethanoyl chloride and dimethyl cadmium.
