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प्रश्न
What is meant by the following term? Give an example of the reaction in the following case.
Semicarbazone
उत्तर
Semicarbazones are derivatives of aldehydes and ketones produced by the condensation reaction between a ketone or aldehyde and semicarbazide.
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संबंधित प्रश्न
What is meant by the following term? Give an example of the reaction in the following case.
Oxime
What is meant by the following term? Give an example of the reaction in the following case.
Ketal
Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.
Semicarbazide and weak acid
How are the following compounds prepared?
benzaldehyde from benzoyl chloride
Acetone, Acetaldehyde, Benzaldehyde, Acetophenone – reactivity towards addition of HCN.
Carboxylic acids contain carbonyl group but do not show the nucleophilic addition reaction like aldehydes or ketones. Why?
What happens when propanone is treated with CH3MgBr and then hydrolysed?
Which will undergo faster nucleophilic addition reaction?
Acetaldehyde or Propanone
The increasing order of the following compounds towards HCN addition is:
| (i) |  |
| (ii) |  |
| (iii) |  |
| (iv) |  |
Which of the following is most reactive in nucleophilic addition reactions?
Out of p-tolualdehyde and p-nitrobenzaldehyde, which one is more reactive towards nucleophilic addition reactions, why?
Draw structure of the following derivative.
Acetaldehydedimethylacetal
Draw structures of the following derivative.
The ethylene ketal of hexan-3-one
The product of the following reaction is
\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{C2H5 - C - CH3 ->[H2/Ni][\Delta] \phantom{..}?}\end{array}\]
Draw structure of the following derivative:
Acetaldehydedimethylacetal
Draw structure of the following derivative:
Acetaldehydedimethylacetal
Draw structure of the following derivative.
The ethylene ketal of hexan-3-one
Draw the structure of the following derivative.
Acetaldehydedimethylacetal
Give an example of the reaction in the following case.
Oxime
