This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 18 Pollution Of Air And Water ā Quiz 4 š Homepage š Download PDF Books š Premium PDF Books Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The substances which contaminate theair are called ..... A) Water pollutants. B) Land pollutants. C) Air pollutants. D) All of the above. Show Answer Correct Answer: C) Air pollutants. 2. Boojho wishes to contribute in reducing air pollution. Which vehicle should he use for going to school? A) Car. B) School Bus. C) Autorickshaw. D) Scooter. Show Answer Correct Answer: B) School Bus. 3. First one to do Disinfect drinking? A) John Marcus. B) John L Leal. C) Isaac Newton. D) Magic in. Show Answer Correct Answer: B) John L Leal. 4. Which element is present in the exhaust of automobiles? A) Lead. B) Calcium. C) Chromium. D) Magnesium. Show Answer Correct Answer: A) Lead. 5. The Water which is safe for drinking is called A) Safe water. B) Distilled water. C) Potable water. D) Mineral water. Show Answer Correct Answer: C) Potable water. 6. True or False. Dust particles and gaseous chemicals from industrial wastes can cause air pollution. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. WHAT IS THE SHORT FORM OF CLOROFLUOROCARBONS A) CFC$_{S}$. B) CFCS. C) CFSC. D) CFS$_{C}$. Show Answer Correct Answer: A) CFC$_{S}$. 8. Which of the following activities result in water pollution? A) Washing Clothes. B) Bathing. C) Brushing our teeth. D) All of the above. Show Answer Correct Answer: D) All of the above. 9. WHICH CHEMICAL DEMAGE THE OZONE LAYER MOST A) CHLOROFLOROCARBONS. B) CLOROFLOROCARBONS. C) CHLOROFLUROCARBONS. D) CLOROFLUOROCARBONS. Show Answer Correct Answer: A) CHLOROFLOROCARBONS. 10. ..... are a major source of gaseous pollutants like sulphur dioxide and nitrogen dioxide A) Oil refineries. B) Mines. C) Vehicles. D) Automobiles. Show Answer Correct Answer: A) Oil refineries. 11. Agricultural runoffs wastes examples? A) Fertilisers. B) Cow dung. C) Oil spills. D) Hot water. Show Answer Correct Answer: A) Fertilisers. 12. Small particles that is made up rocks, soil A) River basin. B) Impermeable. C) Water. D) Sediment. Show Answer Correct Answer: D) Sediment. 13. NAME THE DISEASES CAUSED BY WATER POLLUTION A) TYPHOID. B) CHOLERA. C) DIARRHOEA. D) ALL OF THESE. Show Answer Correct Answer: D) ALL OF THESE. 14. What is the percentage of oxygen present in air? A) 20.10%. B) 78.08%. C) 0.97%. D) 20.95%. E) 21.95%. Show Answer Correct Answer: D) 20.95%. 15. Which of the following is an objective of the Ganga Action Plan? A) Separate contaminated from uncontaminated water. B) Production of hydrogen for energy generation. C) Monitor the throwing of unburnt and half-burnt bodies into the river. D) Support of bathing and washing in the river. Show Answer Correct Answer: C) Monitor the throwing of unburnt and half-burnt bodies into the river. 16. The phenomenon of marble cancer is due to ..... A) Soil particles. B) Will take. C) CFCs. D) Acid rain. Show Answer Correct Answer: D) Acid rain. 17. CFCs are not used in air conditioners. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. When air is contaminatedby unwanted substances which havea harmful effect on both the living andthe non-living, it is referred to as ..... A) Noise pollution. B) Land pollution. C) Water pollution. D) Air pollution. Show Answer Correct Answer: D) Air pollution. 19. The following are sources of water in Singapore EXCEPT A) Imported water from Indonesia. B) NEWater. C) Local catchment water. D) Desalinated water. Show Answer Correct Answer: A) Imported water from Indonesia. 20. WHICH OF THE FOLLOWING IS USED IN DISINFECTING WATER? A) CHLORINE. B) OZONE. C) ULTRAVIOLET RAYS. D) ALL OF THESE. Show Answer Correct Answer: D) ALL OF THESE. 21. A chemical sprayed to kill insects or bugs. A) Aquifer. B) Fetilizer. C) Herbicide. D) Pesticide. Show Answer Correct Answer: D) Pesticide. 22. The water pollution caused by fertilizers in Agriculture increases the amount of oxygen in water bodies A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Which of the following is major source of water pollution? A) Industrial wastes. B) Untreated sewage. C) Use of fertilisers. D) All of the above. Show Answer Correct Answer: D) All of the above. 24. Two metals extremely harmful for human beings are: A) Lead and silver. B) Good and silver. C) Mercury and lead. D) None of the above. Show Answer Correct Answer: C) Mercury and lead. 25. ..... IS A COMMONLY USED CHEMICAL METHOD FOR PURIFYING WATER A) CHLORINATION. B) SODIUM CARBONATE. C) SODIUM HYDROGEN CARBONATE. D) NONE OF THESE. Show Answer Correct Answer: A) CHLORINATION. ā PreviousNext āRelated QuizzesClass 8 Science Chapter 18 Pollution Of Air And Water Quiz 1Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 2Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 3Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 5Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 6Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 7Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 8Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 9Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 10Class 8 Civics Chapter 1 The Indian Constitution QuizClass 8 Civics Chapter 10 Law And Social Justice QuizClass 8 Civics Chapter 2 Understanding Secularism QuizClass 8 Civics Chapter 3 Why Do We Need A Parliament QuizClass 8 Civics Chapter 4 Understanding Laws QuizClass 8 Civics Chapter 5 The Judiciary QuizClass 8 Civics Chapter 6 Understanding Our Criminal Justice System QuizClass 8 Civics Chapter 7 Understanding Marginalisation QuizClass 8 Civics Chapter 8 Confronting Marginalisation QuizClass 8 Civics Chapter 9 Public Facilities QuizClass 8 English Chapter 1 The Best Christmas Present In The World QuizClass 8 English Chapter 10 Great Stone Face Ii QuizClass 8 English Chapter 2 The Tsunami QuizClass 8 English Chapter 3 Glimpses Of The Past QuizClass 8 English Chapter 4 Bepin Choudhury'S Lapse Of Memory QuizClass 8 English Chapter 5 The Summit Within QuizClass 8 English Chapter 6 This Is Jody'S Fawn QuizClass 8 English Chapter 7 A Visit To Cambridge QuizClass 8 English Chapter 8 A Short Monsoon Diary QuizClass 8 English Chapter 9 The Great Stone Face I QuizClass 8 English Chapter Poem 1 The Ant And The Cricket QuizClass 8 English Chapter Poem 2 Geography Lesson QuizClass 8 English Chapter Poem 3 Macavity The Mystery Cat QuizClass 8 English Chapter Poem 4 The Last Bargain QuizClass 8 English Chapter Poem 5 The School Boy QuizClass 8 English Chapter Poem 6 The Duck And The Kangaroo QuizClass 8 English Chapter Poem 7 When I Set Out For Lyonnesse QuizClass 8 English Chapter Poem 8 On The Grasshopper And Cricket QuizClass 8 English The Great Stone Face I QuizClass 8 Geography Chapter 1 Resources QuizClass 8 Geography Chapter 2 Land, Soil, Water, Natural Vegetation And Wildlife Resources QuizClass 8 Geography Chapter 3 Mineral And Power Resources QuizClass 8 Geography Chapter 4 Agriculture QuizClass 8 Geography Chapter 5 Industries QuizClass 8 Geography Chapter 6 Human Resources QuizClass 8 History Chapter 1 How, When And Where QuizClass 8 History Chapter 10 The Changing World Of Visual Arts QuizClass 8 History Chapter 11 The Making Of The National Movement 1870Sā1947 QuizClass 8 History Chapter 12 India After Independence QuizClass 8 History Chapter 2 From Trade To Territory QuizClass 8 History Chapter 3 Ruling The Countryside QuizClass 8 History Chapter 4 Tribals, Dikus And The Vision Of A Golden Age QuizClass 8 History Chapter 5 When People Rebel 1857 And After QuizClass 8 History Chapter 6 Colonialism And The City QuizClass 8 History Chapter 7 Weavers, Iron Smelters And Factory Owners QuizClass 8 History Chapter 8 Civilising The Native, Educating The Nation QuizClass 8 History Chapter 9 Women, Caste And Reform QuizClass 8 Maths Chapter 1 Rational Numbers QuizClass 8 Maths Chapter 10 Visualising Solid Shapes QuizClass 8 Maths Chapter 11 Mensuration QuizClass 8 Maths Chapter 12 Exponents And Powers QuizClass 8 Maths Chapter 13 Direct And Inverse Proportions QuizClass 8 Maths Chapter 14 Factorisation QuizClass 8 Maths Chapter 15 Introduction To Graphs QuizClass 8 Maths Chapter 16 Playing With Numbers QuizClass 8 Maths Chapter 2 Linear Equations In One Variable QuizClass 8 Maths Chapter 3 Understanding Quadrilaterals QuizClass 8 Maths Chapter 4 Practical Geometry QuizClass 8 Maths Chapter 5 Data Handling QuizClass 8 Maths Chapter 6 Squares And Square Roots QuizClass 8 Maths Chapter 7 Cubes And Cube Roots QuizClass 8 Maths Chapter 8 Comparing Quantities QuizClass 8 Maths Chapter 9 Algebraic Expressions And Identities QuizClass 8 Science Chapter 1 Crop Production And Management QuizClass 8 Science Chapter 10 Reaching The Age Of Adolescence QuizClass 8 Science Chapter 11 Force And Pressure QuizClass 8 Science Chapter 12 Friction QuizClass 8 Science Chapter 13 Sound QuizClass 8 Science Chapter 14 Chemical Effects Of Electric Current QuizClass 8 Science Chapter 15 Some Natural Phenomena QuizClass 8 Science Chapter 16 Light QuizClass 8 Science Chapter 17 Stars And The Solar System QuizClass 8 Science Chapter 2 Microorganisms Friend And Foe QuizClass 8 Science Chapter 3 Synthetic Fibres And Plastics QuizClass 8 Science Chapter 4 Materials Metals And Non Metals QuizClass 8 Science Chapter 5 Coal And Petroleum QuizClass 8 Science Chapter 6 Combustion And Flame QuizClass 8 Science Chapter 7 Conservation Of Plants And Animals QuizClass 8 Science Chapter 8 Cell Structure And Functions QuizClass 8 Science Chapter 9 Reproduction In Animals QuizClass 8 Civics Chapter 11 Parliament And The Making Of Laws QuizClass 8 English Supplementary Chapter 1 How The Camel Got His Hump QuizClass 8 English Supplementary Chapter 2 Children At Work QuizClass 8 English Supplementary Chapter 3 The Selfish Giant QuizClass 8 English Supplementary Chapter 4 The Treasure Within QuizClass 8 English Supplementary Chapter 5 Princess September QuizClass 8 English Supplementary Chapter 6 The Fight QuizClass 8 English Supplementary Chapter 7 Jalebis QuizClass 8 English Supplementary Chapter 8 Ancient Education System Of India Quiz š Back to Homepage š Download PDF Books š Premium PDF Books