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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Complete the synthesis by giving missing starting material, reagent or product. C6H5CHO ->[H2NCONHNH2]

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प्रश्न

Complete the synthesis by giving missing starting material, reagent or product.

\[\ce{C6H5CHO ->[H2NCONHNH2]}\]

रासायनिक समीकरण/संरचनाएँ
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उत्तर १

\[\begin{array}{cc}
\phantom{....................................}\ce{O}\\
\phantom{....................................}||\\
\ce{\underset{Benzaldehyde}{C6H5CHO} + \underset{Semicarbazide}{H2NCONHNH2} -> C6H5CH \underset{Benzaldehyde semicarbazide}{= NNHC - NH2} + H2O}\end{array}\]

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उत्तर २

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [पृष्ठ २५७]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
अध्याय 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.17 (iii) | पृष्ठ २५७

संबंधित प्रश्न

Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.

Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone.

Hint: Consider steric effect and electronic effect.


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Hemiacetal


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.

PhMgBr and then H3O+


How will you bring about the following conversion in not more than two steps?

Bromobenzene to 1-Phenylethanol


How are the following compounds prepared?

acetophenone from benzene


What are amines?


Carboxylic acids contain carbonyl group but do not show the nucleophilic addition reaction like aldehydes or ketones. Why?


Which of the following has the most acidic hydrogen?


Which among the following is most reactive to give nucleophilic addition?


Write the name of product formed, when acetone is treated with 2, 4-dinitrophenyl hydrazine.


In the following reaction

\[\ce{Carbonyl compound + MeOH <=>[HCl] acetal}\]

Rate of the reaction is the highest for ______.


Draw structures of the given derivatives.

The ethylene ketal of hexan-3-one


Draw structures of the given derivatives.

The ethylene ketal of hexan-3-one


Draw structure of the following derivative.

The ethylene ketal of hexane-3-one


Why dissociation of HCN is suppressed by the addition of HCL?


Draw the structure of the following derivative.

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Draw the structure of the following derivative.

The ethylene ketal of hexan-3-one


Draw structures of the given derivatives.

The ethylene ketal of hexan-3-one


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