WebClass 8 Science Chapter 18 MCQ with Answers. 1. Air is a mixture of various gases. One of the gases is 21% part of the air and is essential for the survival of human beings. This … Question 1. Water pollution is not caused by (a) burning of fossil fuels (b) bathing in ponds (c) agricultural wastes (d) industrial wastes Answer: (a) Question 2. Potable water (a) cannot have smell (b) has impurities (c) has harmful chemicals (d) has micro-organisms Answer: (a) Question 3. High concentration of … See more Question 1. What are the different ways in which water gets contaminated? Answer: Following are the ways by which water gets contaminated: 1. People dispose of garbage in the water. 2. Many industries discharge their … See more Activity 1 (NCERT Textbook, Page 239) You may have covered your nose while passing a brick kiln emitting smoke or started coughing while walking on a busy road (Fig. 18.1). On … See more Question 1. What should be our main strategy to deal with the environmental problems faced by us ? [DAV2008] Answer: To develop technology that uses : 1. Renewable sources of energy like solar energy, wind energy, … See more Question 1. Write two causes of soil pollution. [MSE (Chandigarh) 2005] Answer: Two causes of soil pollution are excessive use of chemical fertilisers and disposal of waste materials. Question 2. What is the full form … See more
NCERT Solutions for Class 8 Science Chapter 1 Crop Production …
WebAccording to NCERT Solutions for Class 8 Science Chapter 18, the greenhouse effect is the cause of global warming, i.e., an overall … WebCBSE Class 8 Science Chapter Wise Question Bank downloaded from downloaded from brilliant public school sitamarhi science practice paper session rajopatti,dumra. ... CHEM1110 Tutorial #8 2024-2024 Answers; CHEM1110 Tutorial #7 2024-2024 Answers; Assignment 1. Nguyen Quoc Trung. GCD210267 ... VIII Science C.B.S. Practice Paper … filtro hydronix
NCERT Solutions for Class 8 Science Chapter 8 Cell …
WebMar 24, 2024 · These MCQ Questions on Pollution of Air and Water Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 18 Science Class 8 and cross-check your answers during preparation. Question 1. CFC is: (a) Chloro fluoro carbon. (b) Carbon fluo ro carbon. WebSolution: (a) Cleaning of water is a process of removing pollutants. (b) Wastewater released by houses is called sewage. (c) Dried sludge is used as manure. (d) Drains get blocked … WebNov 20, 2024 · Class 8 Science chapter 18 questions answers You will get answers to all questions of Pollution of Air and Water in the NCERT solutions here. Before solving … filtro hydac