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

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Chemistry
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Write one difference in Lyophobic sol and Lyophilic sol

Appears in 2 question papers
Chapter: [5] Surface Chemistry
Concept: Classification of Colloids >> Classification Based on Physical State of Dispersed Phase and Dispersion Medium

Answer the following question.
Why are medicines more effective in the colloidal state?

Appears in 2 question papers
Chapter: [5] Surface Chemistry
Concept: Properties of Colloidal Solutions

Answer the following question.
What is the difference between an emulsion and a gel?

Appears in 2 question papers
Chapter: [5] Surface Chemistry
Concept: Emulsions

Using crystal field theory, write the electronic configuration of d5 ion, if Δ0 > P.

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Crystal Field Theory (CFT)

What is the spectrochemical series?

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Crystal Field Theory (CFT)

What is the difference between a weak field ligand and a strong field ligand?

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Crystal Field Theory (CFT)

State the Hardy-Schulze rule.

Appears in 2 question papers
Chapter: [5] Surface Chemistry
Concept: Properties of Colloidal Solutions

What is crystal field splitting energy?

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Crystal Field Theory (CFT)

Using valence bond theory, predict the hybridization and magnetic character of the following:

[CoF6]3– [Atomic number of Co = 27]

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Valence Bond Theory (VBT)

Write the IUPAC name of the following complex:

[CoBr2(en)2]+

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds

How many ions are produced from the complex Co(NH3)6]Cl2 in solution?

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Definitions of Some Important Terms Pertaining to Coordination Compounds

Define the following term:

Coagulation

Appears in 2 question papers
Chapter: [5] Surface Chemistry
Concept: Properties of Colloidal Solutions

On the basis of crystal field theory, write the electronic configuration for the d5 ion with a weak ligand for which Δ0 < P.

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Crystal Field Theory (CFT)

On the basis of crystal field theory, write the electronic configuration for d4 with a strong field ligand for which Δ0 > P.

Appears in 2 question papers
Chapter: [5] Coordination Compounds
Concept: Bonding in Coordination Compounds >> Crystal Field Theory (CFT)

How do you convert the following:

Ethanol to propanenitrile

Appears in 2 question papers
Chapter: [6] Haloalkanes and Haloarenes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions

Given reasons: C–Cl bond length in chlorobenzene is shorter than C–Cl bond length in CH3–Cl.

Appears in 2 question papers
Chapter: [6] Haloalkanes and Haloarenes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions

How is ‘cast iron’ different from ‘pig iron’?

Appears in 2 question papers
Chapter: [6] General Principles and Processes of Isolation of Elements
Concept: Application of Thermodynamic Principles of Metallurgy

Write the structure of the major product in each of the following reaction :

Appears in 2 question papers
Chapter: [6] Haloalkanes and Haloarenes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions

What is the significance of leaching in the extraction of aluminium?

Appears in 2 question papers
Chapter: [6] General Principles and Processes of Isolation of Elements
Concept: Types of Separation or Concentration of an Ore >> Leaching

In the following pair of halogen compounds, which compound undergoes a faster SN1 reaction?

Appears in 2 question papers
Chapter: [6] Haloalkanes and Haloarenes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions
< prev  581 to 600 of 1512  next > 
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CBSE Science (English Medium) इयत्ता १२ Important Questions
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Important Questions for CBSE Science (English Medium) इयत्ता १२ Chemistry
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Important Questions for CBSE Science (English Medium) इयत्ता १२ English Elective - NCERT
Important Questions for CBSE Science (English Medium) इयत्ता १२ Entrepreneurship
Important Questions for CBSE Science (English Medium) इयत्ता १२ Geography
Important Questions for CBSE Science (English Medium) इयत्ता १२ Hindi (Core)
Important Questions for CBSE Science (English Medium) इयत्ता १२ Hindi (Elective)
Important Questions for CBSE Science (English Medium) इयत्ता १२ History
Important Questions for CBSE Science (English Medium) इयत्ता १२ Informatics Practices
Important Questions for CBSE Science (English Medium) इयत्ता १२ Mathematics
Important Questions for CBSE Science (English Medium) इयत्ता १२ Physical Education
Important Questions for CBSE Science (English Medium) इयत्ता १२ Physics
Important Questions for CBSE Science (English Medium) इयत्ता १२ Political Science
Important Questions for CBSE Science (English Medium) इयत्ता १२ Psychology
Important Questions for CBSE Science (English Medium) इयत्ता १२ Sociology
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