Video Lectures

Chemistry Lectures

Introduction to Thermochemistry

What is pH indicator?

How to prepare hand sanitizer at home

Evaporation is a Surface Phenomenon

Exothermic and Endothermic Reactions

What is pH ? l Strength Of Acid and Bases

Lewis concept of acid and bases

Difference between Valency and Oxidation number

Solubility Product KSP I Equilibrium

Meaning of pH value ?

Trick for Knowing Hybridization

Electrochemical series and its applications

Chemistry Lectures 11th Class Chapter-1

Definition of Mole

Avogadro’s Number

Mole-Mass Calculations

Calculating Mass in Grams and Moles

Mole-Particle Calculations
.

Calculating Number of Particles from Mass

Calculation of Molar Gas Volume

Concept of Mole

Detail of Avogadro ’s number

Calculating Moles from Mass

Mole-Mass Calculations

Calculating Mass in Grams of a Single Atom
.

Calculating Mass and Moles of an Element from a Compound

Representative Particles

Stoichiometry

Calculating Mass from Moles

Detail of mole particle Calculation

Calculating Number of Ions in the Compounds

Molar Gas Volume

Chemistry Lectures 11th Class Chapter-2

Atom and its Structure

More on Properties of Cathode rays

Discovery of Neutrons

Measurement of Charge on Electron-Millikan’s Drop Method

Properties of Fundamenal Particles

Bohr’s Atomic Theory
.

Energy of Revolving Electron

Calculations of Frequency of Photons by Bohr’s Theory

Digestion in Human Beings

Calculation of Energy for Lithium ion

Paschen Series

Calculation of Wave Number of Spectral Series

Conversion of Energy to Wavength, Frequency and Wave Number

Study of X-Rays by Moseley

Quantum Numbers

Magnetic Quantum Numbers (m)

Calculation of Combination of Quantum Numbers

Shapes of d-Orbitals

Pauli’s Exclusion Principle and Hund’s Rule

Discovery of Electron (Cathode rays)

Discovery of Proton

Properties of Neutrons

More on Measurement of Charge on Electron

Rutherford’s Atomic Model

Derivation of Radius of Revolving Electron in nth Orbit

More on Energy of Revolving Electron

Calculations of Wave Numbers of Photons by Bohr’s Theory

Hydrogen Spectrum

Lyman Series

Brackett Series

Planck’s Quantum Theory
.

X-Rays
.

Importance of Moseley’s Law

Principal Quantum Numbers (n)

Spin Quantum Numbers (s)

Shape of s-Orbitals
.

(n+l) Rule

Magnetic properties

Properties of Cathode rays

Properties of positive rays

Measurement of e/m Value of Electron

Mass of Electron

Advantages and Defects in Rutherford’s Atomic Model

More on Derivation of Radius of Revolving Electron in nth Orbit

Energy of Electron in nth Orbit

Defects of Bohr’s Atomic Model
.

More on Hydrogen Spectrum

Balmer Series

Pfund Series

More on Planck’s Quantum Theory
.

Types of X-Rays
.

Uses of X-Rays

Azimuthal Quantum Numbers (l)

Quantum Numbers of Electrons

Shapes of p-Orbitals
.

Aufbau Principle

Mathematics Lectures 11th Class
Chapter-1
Ex-1.1

Introduction to Number Systems

1.1 Question no 1

1.1 Question no 2

Ex-1.2

1.2 Question 4 and 5

1.2 Question no 15

1.2 Question 6 to 9

1.2 Question 12 to 16

Ex-1.3

1.3 Question no 3

1.3 Question 7

Chapter-2
Ex-2.1

2.1 Question no 10

2.1 Question no 5 to 7

Ex-2.2

2.2 Question no 1

2.2 Venn Diagram

2.2 Question no 6

Ex-2.3

2.3 Question no 8

2.3 Question no 9

Ex-2.4

2.4 Question no 1 and 2

2.4 Question no 3 and 4