हिंदी

Science (English Medium) कक्षा १२ - CBSE Important Questions

Advertisements
[object Object]
[object Object]
विषयों
मुख्य विषय
अध्याय

Please select a subject first

Advertisements
Advertisements
< prev  3101 to 3120 of 6299  next > 

Account for the following: Interhalogens are more reactive than pure halogens.

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

which poisonous gas is evolved when white phosphorus is heated with conc. NaOH solution? Write the chemical equation involved.

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 15 Elements - The Nitrogen Family >> Phosphine

Which noble gas has the lowest boiling point?

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 18 Elements - The Noble gas Family

Fluorine is a stronger oxidising agent than chlorine. Why?

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

Complete the equation

PbS + O3

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 16 Elements - The Oxygen Family >> Ozone

What is the basicity of H3PO3 ?

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 15 Elements - The Nitrogen Family >> Oxoacids of Phosphorus

Complete the following equations : P4 + H2O →

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 15 Elements - The Nitrogen Family >> Oxoacids of Phosphorus

Complete the following equations : XeF4 + O2F2

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 18 Elements - The Noble gas Family

Draw the structures of the following molecules: H2S2O8

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

Why does NO2 dimerise?

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 15 Elements - The Nitrogen Family >> Oxides of Nitrogen

Complete the following equations: Ag+PCl5 

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 15 Elements - The Nitrogen Family >> Phosphorus Halides

Complete the following equations: CaF2+H2SO4 

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 16 Elements - The Oxygen Family >> Sulphuric Acid

Complete the following equations: C + conc. H2SO4

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 16 Elements - The Oxygen Family >> Sulphuric Acid

Draw the structure of the following:

XeO3

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 18 Elements - The Noble gas Family

Write the equation involved in the following reaction:

Kolbe’s reaction

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

Write the structure of 3-Bromo-2-methylprop-1-ene

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

Write IUPAC name of the following compound (CH3)2 N − CH2CH3

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

Complete the given chemical equations:

`2XeF_2 + 2H_2O->`

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 18 Elements - The Noble gas Family

Draw the structures of `H_3PO_2`

 

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 16 Elements - The Oxygen Family

Complete chemical reactions are:Cl2 + H2O →

Appears in 1 question paper
Chapter: [7] P - Block Elements
Concept: Group 17 Elements - The Halogen Family
< prev  3101 to 3120 of 6299  next > 
Advertisements
Advertisements
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
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×