# NCERT NOTES

## NCERT notes and solutions for class 7 Geography chapter 4 AIR

NCERT notes and solutions Class 7 Geography Chapter 4 AIR Atmosphere-  It is a blanket of air that surrounds our earth. It protects us from harmful ultraviolet rays. Composition of the atmosphere- Earth atmosphere is made up of Nitrogen (78%) Oxygen (21%) Carbon dioxide (0.037)… Read More »NCERT notes and solutions for class 7 Geography chapter 4 AIR

## NCERT notes and solutions for class 7 Geography chapter 3 OUR CHANGING EARTH

NCERT notes and solutions Class 7 Geography Chapter 3 OUR CHANGING EARTH Lithosphere Plate– The lithosphere is made up of a number of plates called the lithosphere plate. It moves a few millimeters each year because of magma present inside the earth. The movement of… Read More »NCERT notes and solutions for class 7 Geography chapter 3 OUR CHANGING EARTH

## NCERT Notes and Solutions for Class 7 Geography Chapter -2 Inside the Earth

NCERT Notes and Solutions for Class 7 Geography Chapter -2 Inside the Earth The earth is the only planet in the solar system in which life exists. Interior of the Earth: The earth has serval layers, one inside another. The uppermost layer of the earth’s… Read More »NCERT Notes and Solutions for Class 7 Geography Chapter -2 Inside the Earth

## NCERT Notes and Solutions for Class 7 Geography Chapter -1 Environment

NCERT Notes and Solutions for Class 7 Geography Chapter -1 Environment Environment – It is derived from the French word Environner having meaning neighbourhood. The environment is basic life support which provides the air, the water, the food, and the land. We can define the… Read More »NCERT Notes and Solutions for Class 7 Geography Chapter -1 Environment

## NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry (Exercise – 8.4)

NCERT solutions for class 10 Maths Chapter 8 Introduction to Trigonometry Exercise 8.4 Ex 8.4 Question 1. Express the trigonometric ratios sin A, sec A and tan A in terms of cot A. Solution: Ex 8.4 Question 2. Write all the other trigonometric ratios of… Read More »NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry (Exercise – 8.4)