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Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions for Chemistry

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Chemistry
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Accomplish the following conversion:

Benzene to m-bromophenol

[9] Amines
Chapter: [9] Amines
Concept: undefined >> undefined

Accomplish the following conversion:

Aniline to p-bromoaniline

[9] Amines
Chapter: [9] Amines
Concept: undefined >> undefined

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Give a plausible explanation for the following:

Why are aliphatic amines stronger bases than aromatic amines?

[9] Amines
Chapter: [9] Amines
Concept: undefined >> undefined

Complete the following reaction:

\[\ce{C6H5N2Cl + H3PO2 + H2O ->}\]

[9] Amines
Chapter: [9] Amines
Concept: undefined >> undefined

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

Ethanal, Propanal, Propanone, Butanone.

Hint: Consider steric effect and electronic effect.

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

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.

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Predict the product of the following reaction:

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Predict the product of the following reaction:

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Predict the product of the following reaction:

\[\begin{array}{cc}
\phantom{..............}\ce{O}\\
\phantom{..............}||\\
\ce{R - CH = CH - CHO + NH2 - C - NH - NH2 ->[H+]}\end{array}\]

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Cyanohydrin

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Acetal

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Semicarbazone

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Hemiacetal

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Oxime

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Ketal

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Imine

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

2, 4-DNP-derivative

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is meant by the following term? Give an example of the reaction in the following case.

Schiff’s base

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.

PhMgBr and then H3O+

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.

Semicarbazide and weak acid

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined
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