Class 8_Science_Chapter-18

NCERT Technological Solutions 8 Science Chapter 18 Air and Water Pollution NCERT BIBLE TESTS Question 1. What are the different ways water is polluted? Answer. Water is polluted by the addition of toxic substances that are harmful to health. Sewage, agricultural chemicals, and industrial waste are the main sources of water pollution. Question 2. At a personal level, how can you help reduce air pollution? Answer. At the individual level…

Class 8_Science_Chapter-17

NCERT Solutions for sophistication 8 Science Chapter 17 Stars and therefore the system NCERT BIBLE TESTS Choose the correct answer from questions 1-3: Question 1. Which of the following is not a member of the solar system? (a) A star (b) Satellite (c) Unclean (d) A comet Answer. (c) Unclean. Question 2. Which of the following is not a solar panel? (a) Sirius (b) Mercury (c) Saturn (d) Land Answer.…

Class 8_Science_Chapter-16

NCERT Solutions for sophistication 8 Science Chapter 16 LightNCERT TEXTBOOK EXERCISESQuestion 1.Suppose you’re in an exceedingly dark room. are you able to see objects within the room? are you able to see objects outside the room? Explain.Answer.We cannot see objects within the darkroom. But, we will see objects outside the space, just in case there’s light outside the area. it’s so because to work out an object, we’d like light which gets reflected from the thing and enters our eyes.Question 2.Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection?Answer. Regular…

Class 8_Science_Chapter-15

NCERT Complex Solutions 8 Science Chapter 15 Other Natural Events NCERT BIBLE TESTS Select the appropriate option in Question 1 and a few. Question 1. Which of the following can be easily changed due to a conflict? (a) Plastic scale (b) a copper rod (c) Inspired balloon (d) Wool fabric. Answer. (b) A copper rod. Question 2. When the glass rod is rubbed with a piece of silk cloth the…

Class 8_Science_Chapter-14

NCERT Technological Solutions 8 Science Chapter 14 The Impact of Current Electric Chemicals NCERT BIBLE TESTS Question 1. Fill in the blanks: 1. Most fluids are solutions of …… .., ……………… and …………… solutions. 2. The passage of an electric current in response causes ………… ..results. 3. When passing the sulfate solution, the copper is placed on a connected plate ……… ..material terminal. 4. The method of inserting a layer…

Class 8_Science_Chapter-13

NCERT Complex Solutions 8 Science Chapter 13 Sound NCERT BIBLE TESTS Question 1. Choose the correct answer: Noise can pass (a) gas only (b) only solid (c) liquid only (d) solids, liquids and gases Answer. (d) solids, liquids and gases. Question 2. The word for which of the following is likely to be the lowest frequency? (a) a daughter (b) A baby boy (c) Man (d) a girl Answer. (b)…

Class 8_Science_Chapter-12

NCERT Complex Solutions 8 Science Chapter 12 Conflict NCERT BIBLE TESTS Question 1. Fill in the blanks: 1. Conflict is contradictory phakathi .in interrelated areas. 2. Conflict depends on …………… ..in areas. 3. Friction produces …………………. 4. Spraying of powder on carrom board. ……………. Conflict. 5. Slide conflict in ……… .there is a vertical collision. Answer. 1. related movements 2. smoothness (either unusual or natural) 3. heat 4. reduces 5.…

Class 8_Science_Chapter-11

NCERT Complex Solutions 8 Science Chapter 11 Strength and Stress NCERT BIBLE TESTS Question 1. Provide two samples of each shape as you push or pull to change the movement of objects. Answer. (1) When a rubber or marble ball is placed on a really smooth surface and is given a atiny low push, it begins to move at a certain speed. If we keep an obstacle in the path…

Class 8_Science_Chapter-10

NCERT Solutions to Complexity 8 Science Chapter 10 Reaching Adolescence NCERT BIBLE TESTS Question 1. What is the term used for the chemical release of endocrine glands responsible for the changes that take place in the body? Answer. A term used for the production of endocrine glands, which is responsible for the various changes that take place in the body. Question 2. Describe youth. Answer. The life span during which…

Class 8_Science_Chapter-9

NCERT Technological Solutions 8 Science Chapter 9 Animal Breeding NCERT BIBLE TESTS Question 1. Explain the importance of biological reproduction. Answer. The production of modern humans to their parents is thought of as breeding. Reproduction is very important because it ensures the continuation of a particular species. If there is no production system, the species will disappear from the earth. Question 2. Explain how to breed people in general. Answer.…