MCQ 11 MarkWhich of the following problems is not created by noise pollution?✓DiarrheaBHypertensionCDeafnessDIrritationAnswerCorrect option: A. DiarrheaView full question & answer→
MCQ 21 MarkOil spills are a source of pollution for:AWaterBLand and Water✓Land and AirDAir and NoiseAnswerCorrect option: C. Land and AirView full question & answer→
MCQ 31 MarkDeforestation is one of the sources of pollution because:AIt increases the oxygen levels produced✓It decreases the oxygen levels producedCIt causes fertilizers to wash away in the waterDNone of the aboveAnswerCorrect option: B. It decreases the oxygen levels producedView full question & answer→
MCQ 41 MarkWhich is the poisonous gas contained in the exhaust of a petrol driven vehicle?✓AmmoniaBCarbon$-$monoxideCChlorineDCarbon$-$dioxideAnswerCorrect option: A. AmmoniaView full question & answer→
MCQ 51 Mark$71\%$ of earth surface is covered with:ALandBAir✓WaterDCoalAnswerCorrect option: C. WaterView full question & answer→
MCQ 61 MarkOzone is abundant in this layer. Ozone heats this layer as it absorbs from incoming ultraviolet radiation from the sun:AThermosphereBTroposphereCMesosphere✓StratosphereAnswerCorrect option: D. StratosphereView full question & answer→
MCQ 71 MarkIf waste materials contaminate the source of drinking water which of the following diseases will spread?AScurvy✓TyphoidCMalariaDAnemiaAnswerCorrect option: B. TyphoidView full question & answer→
MCQ 81 MarkAir is composed of gases, water vapours and:✓Dust particlesBRainfallCSnowfallDLightAnswerCorrect option: A. Dust particlesView full question & answer→
MCQ 91 MarkMaximum permissible smoke density in diesel vehicles is:A75 HSU✓65 HSUC50 HSUD45 HSUAnswerCorrect option: B. 65 HSU65 HSUView full question & answer→
MCQ 101 MarkAir pollution is caused by:AInsecticidesBSewage✓SmokeDLoud SpeakersAnswerCorrect option: C. SmokeView full question & answer→