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Science (English Medium) कक्षा १२ - CBSE Important Questions for Chemistry

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Chemistry
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Complete the following reactions : XeF6 + 3H2O →

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 18 Elements >> Concept of Group 18 Elements

What happens when conc. is H2SO4 added to Cu? Write the equations.

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 16 Elements >> Compounds of Sulphur

What happens when SO3 is passed through water? Write the equations.

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 16 Elements >> Compounds of Sulphur

Complete the following reactions:

XeF6+2H2O ----->

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 18 Elements >> Concept of Group 18 Elements

What happens when (NH4)2Cr2O7 is heated? Write the equations.

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: p-Block elements of Group 15 Elements >> Ammonia

Draw the structure of the following:

H2S2O7

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 16 Elements >> Compounds of Sulphur

Draw the structures of the following

XeF6

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 18 Elements >> Concept of Group 18 Elements

Write the formula of the compound of iodine which is obtained when conc. HNO3 oxidises I2

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 16 Elements >> Classification of Oxides

Write the IUPAC name of the following compound: 

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Draw the structures of the following: BrF5

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 17 Elements >> Interhalogen Compounds

Arrange the following compounds in the increasing order of their acid strength:

p-cresol, p-nitrophenol, phenol

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Physical and Chemical Properties of Alcohols and Phenols

Write the structures of the products when Butan-2-ol reacts with CrO3

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Write the structures of the products when Butan-2-ol reacts with SOCl2

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Give reasons for the following:

Electron gain enthalpies of halogens are largely negative.

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Compounds of Halogens

Give reasons for the following: N2O5 is more acidic than N2O3

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: P - Block Group 16 Elements >> Classification of Oxides

Complete the following equations:

 KMnO4 

 

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Concept of Group 17 Elements

How will you convert: Phenol to 2, 4, 6 − trinitrophenol?

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Methods of Preparation of Alcohols

Which allotrope of sulphur is thermally stable at room temperature ?

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: p-Block elements of Group 15 Elements >> Phosphorus - Allotropic Forms

Name the reagents used in the following reactions:

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Methods of Preparation of Alcohols

Write the structures of main products when benzene diazonium chloride (C6 H5 N+2CI)C6 H5 N2+CI- reacts with the  :  HBF4/∆

Appears in 1 question paper
Chapter: [7] Alcohols, Phenols and Ethers
Concept: Methods of Preparation of Phenols
< prev  1201 to 1220 of 1512  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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