Science

Class 7 | Science | Chapter 18 | Wastewater Story | NCERT Solutions Question 1. Fill in the blanks: (a) Cleaning of water is a process of removing ____________. (b) Wastewater released by houses is called ____________. (c) Dried ____________ is used as manure. (d) Drains get blocked by ____________ and ____________. Answer (a) pollutants (b) sewage (c) … [Read more...] about Chapter 18 Wastewater Story

Class 7 | Science | Chapter 17 | Forests : Our Lifeline | NCERT Solutions Question 1. Explain how animals dwelling in the forest help it grow and regenerate. Answer 1 Animals work as the cleaning agents in the forest. Microorganisms convert dead plants and animals into humus which is rich in nutrients. 2) Animals help in dispersal of seeds from one part of the forest … [Read more...] about Chapter 17 Forests : Our Lifeline

Class 7 | Science | Chapter 16 | Water : A Precious Resource | NCERT Solutions Question 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 living in rural areas. (T/F) (c) Water from rivers is … [Read more...] about Chapter 16 Water : A Precious Resource

Class 7 | Science | Chapter 15 | Light | NCERT Solutions Question 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 that of the object. (d) An image which can be obtained on … [Read more...] about Chapter 15 Light

Class 7 | Science | Chapter 14 | Electric Current and its Effect | NCERT Solutions Question 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. Answer 1  Question 2. Draw the circuit diagram to represent the circuit … [Read more...] about Chapter 14 Electric Current and its Effect

Class 7 | Science | Chapter 11 | Transportation in Animals and Plants | NCERT Solutions Question 1. Match structures given in Column I with functions given in Column II.         Column I                  Column II (i) Stomata           (a) Absorption of water (ii) Xylem              (b) Transpiration (iii) Root hairs       (c) Transport of food (iv) Phloem           (d) … [Read more...] about Chapter 11 Transportation in Animals and Plants

Chapter 10, Respiration in Organisms | Class 7 | Science| NCERT Solutions Question 1. Why does an athlete breathe faster and deeper than usual after finishing the race? Answer 1 When an athlete runs in the race, his body needs lots of  energy. 2. List the similarities and differences between aerobic and anaerobic respiration. Answer 2 Similarity between aerobic and … [Read more...] about Chapter 10 Respiration in Organisms

Chapter 9, Soil | Class 7 | Science| NCERT Solutions Tick the most suitable answer in questions 1 and 2. Question 1. In addition to the rock particles, the soil contains (i) air and water (ii) water and plants (iii) minerals, organic matter, air and water (iv) water, air and plants Answer 1 (iii) minerals, organic matter, air and water. Question 2. The … [Read more...] about Chapter 9 Soil