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Account for the following : 
t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of t-butyl methyl ether.

Appears in 2 question papers
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Preparation of Ethers

Answer the following question.
Write the disproportionation reaction of H3PO3

Appears in 2 question papers
Chapter: [7] P - Block Elements
Concept: Group 15 Elements - The Nitrogen Family >> Phosphorus - Allotropic Forms

Draw the structure of XeF4

Appears in 2 question papers
Chapter: [7] P - Block Elements
Concept: Group 18 Elements - The Noble gas Family

Account for the following : 
Although Fluorine has less negative electron gain enthalpy yet F2 is a strong oxidizing agent.

Appears in 2 question papers
Chapter: [7] P - Block Elements
Concept: P Block Elements

Answer the following question.
Write a chemical reaction to test sulphur dioxide gas. write a chemical equation involved.

Appears in 2 question papers
Chapter: [7] P - Block Elements
Concept: Group 16 Elements - The Oxygen Family >> Sulphur Dioxide

Give a simple chemical test to distinguish between the following pair of compounds:

Ethanal and Propanal

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Oxidation

A compound 'A' of molecular formula C2H3OCl undergoes a series of reactions as shown below. Write the structures of A, B, C and D in the following reactions :

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Reactions Due to α-hydrogen

Distinguish between the following : Benzoic acid and methyl benzoate

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of O-H Bond

Write the structure of 2-methylbutanal.

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Nomenclature of Aldehydes and Ketones

Write the structures of the main products when acetone (CH3 − CO − CH3) reacts with the following reagent :

Zn − Hg/conc. HCl

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Reduction

Write the structures of the main products when acetone (CH3 − CO − CH3) reacts with the following reagent :

H2N − NHCONH2/H+

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Give a simple chemical test to distinguish between the following pair of compounds :

CH3CH2CHO and CH3CH2COCH3

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Oxidation

Describe the following:

Cannizzaro reaction

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Other Reactions

How do you convert the following:

Acetic acid to Methane

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Nomenclature of Carboxylic Acids

Write the product formed when p-nitro chlorobenzene is heated with aqueous  NaOH at 443K followed by acidification? 

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Other Reactions

Write chemical equation of the following reaction : 
Acetophenone is treated with `("Zn"("Hg"))/"Conc.HCl"`.

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Reduction

Write chemical equations of the following reaction :
Benzoyl chloride is hydrogenated in the presence of `"Pd"/(BaSO_4)`

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Reactions Due to α-hydrogen

Write a chemical equation for the following reaction: 
Propanone is treated with dilute Ba( OH)2.

Appears in 2 question papers
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Reactions of Aldehydes and Ketones - Reactions Due to α-hydrogen

Arrange the following in increasing order of their basic strength in aqueous solution:

\[\ce{CH3NH2, (CH3)3N, (CH3)2NH}\]

Appears in 2 question papers
Chapter: [9] Amines
Concept: Chemical Reactions of Amines - Basic Character of Amines

Arrange the following in increasing order of their basic strength :

C6H5 – NH2, C6H5 – CH2 – NH2, C6H5 – NH – CH3

Appears in 2 question papers
Chapter: [9] Amines
Concept: Physical Properties of Amines
< prev  1381 to 1400 of 5300  next > 
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CBSE Science (English Medium) कक्षा १२ Important Questions
Important Questions for CBSE Science (English Medium) कक्षा १२ Biology
Important Questions for CBSE Science (English Medium) कक्षा १२ Chemistry
Important Questions for CBSE Science (English Medium) कक्षा १२ Computer Science (C++)
Important Questions for CBSE Science (English Medium) कक्षा १२ Computer Science (Python)
Important Questions for CBSE Science (English Medium) कक्षा १२ English Core
Important Questions for CBSE Science (English Medium) कक्षा १२ English Elective - NCERT
Important Questions for CBSE Science (English Medium) कक्षा १२ Entrepreneurship
Important Questions for CBSE Science (English Medium) कक्षा १२ Geography
Important Questions for CBSE Science (English Medium) कक्षा १२ Hindi (Core)
Important Questions for CBSE Science (English Medium) कक्षा १२ Hindi (Elective)
Important Questions for CBSE Science (English Medium) कक्षा १२ History
Important Questions for CBSE Science (English Medium) कक्षा १२ Informatics Practices
Important Questions for CBSE Science (English Medium) कक्षा १२ Mathematics
Important Questions for CBSE Science (English Medium) कक्षा १२ Physical Education
Important Questions for CBSE Science (English Medium) कक्षा १२ Physics
Important Questions for CBSE Science (English Medium) कक्षा १२ Political Science
Important Questions for CBSE Science (English Medium) कक्षा १२ Psychology
Important Questions for CBSE Science (English Medium) कक्षा १२ Sociology
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