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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

What is the action of following on proponal? Hydrazine

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प्रश्न

What is the action of following on proponal?

Hydrazine

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उत्तर

Propanal will undergo an addition elimination reaction with hydrazine to give corresponding hydrazone derivative containing C = N bond (imine).

\[\begin{array}{cc}
\phantom{}\ce{H}\phantom{....................................}\ce{H}\phantom{.......}\\
\phantom{}|\phantom{.....................................}|\phantom{........}\\
\ce{\underset{\text{Propanal}}{H3CH2C - C = O} + \underset{\text{Hydrazine}}{H2N - NH2}->\underset{\text{Hydrazone derivative}}{H3CH2C - C = N - NH2} + H2O}
\end{array}\]

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पाठ 12: Aldehydes, Ketones and Carboxylic acids - Short answer questions (Type-I)

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
पाठ 12 Aldehydes, Ketones and Carboxylic acids
Short answer questions (Type-I) | Q 5.2

संबंधित प्रश्‍न

Answer in brief.

Formic acid is stronger than acetic acid. Explain.


Write the structure of the product formed when carboxylic acid is heated with a dehydrating agent like P2O5


Write the reducing agent which CANNOT reduce –COOH group.


Write the preparation reactions for acid amide from the following.

Carboxylic acid


Write the preparation reactions for acid amide from the following.

Acid chloride


Write reactions for the following conversions.

Propanone to Propane


Write reactions for the following conversions.

4-Nitrobenzoic acid to Nitrobenzene


Write chemical reactions to convert –COOH group of acetic acid into the following.

CH3COCl


Complete the following sequence of reactions and write structures for A, B, C.

\[\ce{Dry ice ->[i. Dry ether][ii. Hydrolysis] A ->[PCl5] B ->[H2(gas)][Pd - BaSO4] C}\]


Which of the following compounds reacts with ammonia to form urotropine?


The product of the reaction between dialkyl cadmium and acyl chloride is a/an ____________.


Which of the following carboxylic acids will have the highest acidity?


The reducing agent preferred to convert carboxylic acids and esters to primary alcohols is ____________.


The oxidation number of B in NaBH4 is ____________.


Which of the following functional groups is reduced by diborane?


Which of the following carboxylic acids ha highest acidic strength?


Write structure of adipic acid.


The number of bonding pairs and lone pairs of electrons present in the central atom of ammonia molecular are respectively.


Which of the following can reduce?

\[\ce{RCOOH -> RCH2OH}\]


Draw structures 01 conjugate bases of monochloroacetic acid and dichloroacetic acid. Which one is more stabilized by -I effect?


How sodium bicarbonate test is used to distinguish between carboxylic acid and phenol?


Which among the following is the strongest acid?


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