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

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Chemistry
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Define the following term:

Anomers 

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Isomerism in Coordination Compounds >> Stereoisomerism

Write structures of compounds A, B and C in of the following reactions

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Definitions of Some Important Terms Pertaining to Coordination Compounds

Write structures of compounds A, B and C in of the following reactions

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Definitions of Some Important Terms Pertaining to Coordination Compounds

Arrange the following compound groups in the increasing order of their property indicated :

p-nitrophenol, ethanol, phenol (acidic character)

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Introduction of Coordination Compounds

Arrange the following compound groups in the increasing order of their property indicated :

Propanol, Propane, Propanal (boiling point)

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Introduction of Coordination Compounds

Write one difference in Homogeneous catalysis and Heterogeneous catalysis

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Catalysis >> Homogeneous and Heterogeneous Catalysis

What type of isomerism is shown by the complex [Co(NH3)6] [Cr(CN)6]?

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Isomerism in Coordination Compounds >> Structural Isomerism

Why a solution of [Ni(H2O)6]2+ is green while a solution of [Ni(CN)4]2− is colourless? (At. no. of Ni = 28)

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Colour in Coordination Compounds

Write the IUPAC name of the following complex:

[Co(NH3)5(CO3)]Cl

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Definitions of Some Important Terms Pertaining to Coordination Compounds

Using IUPAC norms write the formulae for Potassium trioxalatoaluminate(III)

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Importance and Applications of Coordination Compounds

Write the IUPAC name of the following coordination compound:

K3[Fe(CN)6]

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds

Draw the geometrical isomers of complex [Pt(en)2Cl2]2+.

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Isomerism in Coordination Compounds >> Stereoisomerism

Which of the following is a more stable complex and why ?

\[\left[ Co \left( {NH}_3 \right)_6 \right]^{3 +} and \left[ Co \left( en \right)_3 \right]^{3 +}\]
Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Introduction of Coordination Compounds

Which of the following isomers is more volatile:

o-nitrophenol or p-nitrophenol?

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Nomenclature of Coordination Compounds - Formulas of Mononuclear Coordination Entities

Write the IUPAC name of the complex [Cr(NH3)4Cl2]+. What type of isomerism does it exhibit?

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Isomerism in Coordination Compounds >> Structural Isomerism

In reference to Freundlich adsorption isotherm, write the expression for adsorption of gases on solids in the form of an equation.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Adsorption Isotherms (Freundlich and Langmuir Adsorption Isotherm)

Write an important characteristic of lyophilic sols.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Classification of Colloids >> Classification Based on Type of Particles of the Dispersed Phase, Multimolecular, Macromolecular and Associated Colloids

Based on the type of particles of dispersed phase, give one example each of associated colloid and multimolecular colloid.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Colloids Around Us

How will you convert the following?

Nitrobenzene into aniline

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds

What is electrophoresis?

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Properties of Colloidal Solutions
< prev  301 to 320 of 1512  next > 
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