Science (English Medium) Class 11 - CBSE Question Bank Solutions for Chemistry

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Chemistry
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What is the basic theme of organisation in the periodic table?

[0.03] Classification of Elements and Periodicity in Properties
Chapter: [0.03] Classification of Elements and Periodicity in Properties
Concept: Significance of Classification of Elements

Calculate the number of electrons which will together weigh one gram.

[0.02] Structure of Atom
Chapter: [0.02] Structure of Atom
Concept: Subatomic Particles > Discovery of Electron

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Calculate the mass and charge of one mole of electrons.

[0.02] Structure of Atom
Chapter: [0.02] Structure of Atom
Concept: Subatomic Particles > Discovery of Electron

Write the complete symbol for the atom with the given atomic number (Z) and Atomic mass (A)

Z = 17, A = 35

[0.02] Structure of Atom
Chapter: [0.02] Structure of Atom
Concept: Subatomic Particles > Discovery of Electron

Write the complete symbol for the atom with the given atomic number (Z) andAtomic mass (A).

Z = 92, A = 233

[0.02] Structure of Atom
Chapter: [0.02] Structure of Atom
Concept: Subatomic Particles > Discovery of Electron

Write the complete symbol for the atom with the given atomic number (Z) and atomic mass (A).

Z = 4, A = 9

[0.02] Structure of Atom
Chapter: [0.02] Structure of Atom
Concept: Subatomic Particles > Discovery of Electron

Explain the Formation of a Chemical Bond.

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

Write Lewis symbols for the following atoms and ions: S and S2–.

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

Write Lewis symbols for the following atoms and ions: Al and Al3+.

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

Write Lewis symbols for the following atoms and ions H and H.

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions:-

K and S

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions:

Ca and O

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions:

Al and N

[0.04] Chemical Bonding and Molecular Structure
Chapter: [0.04] Chemical Bonding and Molecular Structure
Concept: Kossel and Lewis Approach to Chemical Bonding

What will be the minimum pressure required to compress 500 dm3 of air at 1 bar to 200 dm3 at 30°C?

[0.05] States of Matter:- Gases and Liquids
Chapter: [0.05] States of Matter:- Gases and Liquids
Concept: Intermolecular Forces - Introduction

What would be the SI unit for the quantity pV22/n?

[0.05] States of Matter:- Gases and Liquids
Chapter: [0.05] States of Matter:- Gases and Liquids
Concept: Intermolecular Forces - Introduction

A thermodynamic state function is a quantity ______.

[0.06] Chemical Thermodynamics
Chapter: [0.06] Chemical Thermodynamics
Concept: Thermodynamic Terms

For an isolated system, ΔU = 0, what will be ΔS?

[0.06] Chemical Thermodynamics
Chapter: [0.06] Chemical Thermodynamics
Concept: Thermodynamic Terms

Define environmental chemistry.

[0.14] Environmental Chemistry
Chapter: [0.14] Environmental Chemistry
Concept: Environmental Pollution - Introduction

What are the common chemical features of alkali metals?

[0.1] S-block Elements (Alkali and Alkaline Earth Metals)
Chapter: [0.1] S-block Elements (Alkali and Alkaline Earth Metals)
Concept: Group 1 Elements - Alkali Metals

Why are alkali metals not found in nature?

[0.1] S-block Elements (Alkali and Alkaline Earth Metals)
Chapter: [0.1] S-block Elements (Alkali and Alkaline Earth Metals)
Concept: Group 1 Elements - Alkali Metals
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