HARD WATER AND SOFT WATER
Summary of hard water and soft water Exercise of hard and soft water Summary Hard Water: If it contains dissolved salts of chlorides, sulphates and bicarbonates of calcium and magnesium. Example: water of some...
Category: NCERT School Syllabus
Fun with Magnets
Summary of fun with magnets solved exercise of fun with magnets Summary The substances having the property of attracting iron are now known as magnet, that produces a magnetic field . This magnetic field is...
The Stolen Boat, a poem by William Wordsworth
Where was the boat moored?
Answer: The place where the boat was usually moored.
Circles
Summary of circles Solved exercise of circles summary A circle is a set of all points in a plane at a fixed distance from a fixed point in a plane. The fixed point is...
Square ,Square Roots
Summary of square and square roots Solved exercise of square roots Summary Square Number When we multiply the number by itself we will get Square number.A square number is a natural number obtained by...
Energy
Summary of energy Summary Is the capacity of a body to do work. Energy is measured by the work that the body can do. Energy exists in many forms such as heat, light, sound,...
Water
summary of water Solved exercise of water Summary Water a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous liquid and solid states. How much water do we use? Throughout...
Subtraction
Summary of subtraction Solved exercise of subtraction Summary Subtraction is an arithmetic operation that represents the operation of removing objects from a collection.The result of a subtraction is called a difference.Subtraction is signified by the minus sign (-) . Subtraction...
ELECTRICAL APPLIANCES IN EVERYDAY LIFE
Summary of electrical appliances in every day life Summary Electrical appliance is one of the basic components of a circuit which makes use of electricity. we make use of electricity to take care of...
AIR
Summary of air Solved exercise of air Summary Air being a mixture of many gases is very essential for sustaining the life of animals and plants, air is not visible, but its presence can...
