Chapter 18 Wastewater Story

Chapter 18 Wastewater Story Q.1. Fill in the blanks: (a) Cleaning of water is process of removing __________ (b) Wastewater released by houses is called __________. (c) Dried __________ is used as manure. (d) Drains get blocked by __________ and __________. Ans.(a)...

Chapter 17 Forests Our Lifeline

Chapter 17 Forests Our Lifeline Q.1. Explain how animals dwelling in the forest help it grow and regenerate. Ans. Animals help in growing and regenerating forests in many ways. Animals work as the cleaning agents in the forest. Microorganisms work on dead bodies of...

Chapter 16 Water A Precious Resource

Chapter 16 Water A Precious Resource Q.1. Mark ‘T’ if the statement is true and ‘F’ if it is false: (a) The freshwater stored in the ground is much more than that present in the rivers and lakes of the world. (T/F) (b) Water shortage is a problem faced only by people...

Chapter 15 Light

Chapter 15 Light Q.1.Fill in the blanks: (a) An image that cannot be obtained on a screen is called ___________ . (b) Image formed by a convex is __________ always virtual and smaller in size. (c) An image formed by a __________ mirror is always of the same size as...

Chapter 14 Electric Current and its Effects

Chapter 14 Electric Current and its Effects Q.1.Draw in your notebook the symbols to represent the following components of electrical circuits: connecting wires, switch in the ‘OFF’ position, bulb, cell, switch in the ‘ON’ position and battery. Ans. Q.2.Draw the...
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