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प्रश्न
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Phenyl hydrazine
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उत्तर
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संबंधित प्रश्न
Answer in brief.
Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Answer in brief.
Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.
_____________ reaction is used to synthesize straight alkyl substituted benzenes.
Addition of sodium bisulphite to ethanol is ____________ type of reaction.
Ethyl methyl ketone can be reduced to n-butane by which of the following reactions?
Which of the following gives red precipitate with Fehling's solution?
If acetaldehyde is treated with Fehling's solution, the change that occurs in the system is ____________.
An aldehyde or ketone reacts with hydrogen cyanide to form corresponding cyanohydrin derivatives. This reaction is an example of ____________.
Which of the following is Clemmensen reduction?
Which of the following reagents is used to avoid further oxidation of aldehydes?
Which of the following does NOT give yellow precipitate when reacted with (NaOH + I2) mixture?
The formation of cyanohydrin from acetone is an example of ____________.
Assertion: 2, 2-dimethyl propanoic acid does not give HVZ reaction.
Reason: 2-2, dimethyl propanoic acid does not have α-hydrogen atom.
‘B’ is:
Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid.
Identify A, B and C.
How will you convert benzaldehyde into the following compound?
Benzoic acid
What is the action of HCN on 2, 4-dichlorobenzaldehyde?
Identify A, B and C.
How will you prepare ethyl acetate from methyl acetate?
Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of ______.
Which of the following is not correctly matched?
Identify the reaction in which carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with zinc-amalgam and cone. HCI.
Aldehydes are readily oxidised to yield carboxylic acids but ketones are inert to oxidation. Which is the most likely explanation regarding this difference in reactivity?
What is the action of the following regent on propanal?
Sodium Bisulphite
How will you prepare acetic anhydride from acetic acid.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Which from following tests confirms presence of aldehydic group in glucose?
