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Out of BaCl2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Properties of Colloidal Solutions

Draw the geometrical isomers of complex [Pt(NH3)2Cl2].

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

Write the hybridization and magnetic behaviour of the complex [Ni(CO)4].

(At.no. of Ni = 28)

Appears in 3 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Magnetic Properties of Coordination Compounds

Give reasons for the following observations: Leather gets hardened after tanning.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Properties of Colloidal Solutions

Give reasons for the following observations: Lyophilic sol is more stable than lyophobic sol. 

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Purification of Colloidal Solution

Give reasons for the following observations: Lyophilic sol is more stable than lyophobic sol. 

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Purification of Colloidal Solution

It is necessary to remove CO when ammonia is prepared by Haber's process.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Catalysis >> Enzyme Catalysis

What are emulsions?

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Emulsions

What are the different types of emulsions? Give one example of each type.

Appears in 3 question papers
Chapter: [5] Surface Chemistry
Concept: Emulsions

What type of isomerism is exhibited by the complex [Co(en)3]3+?

(en = ethane-1,2-diamine)

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

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: 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: 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: Concept 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: Concept 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: 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
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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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