MCQ Chapter 1 Science Class 6 Maharashtra Board Natural Resources – Air, Water and Land 1. Which gas is used to inflate airships?OxygenHeliumArgonCarbon dioxideQuestion 1 of 202. Which gas in the atmosphere is essential for protein formation?OxygenCarbon dioxideNitrogenNeonQuestion 2 of 203. Which gas is used in flash photography?KryptonXenonNeonArgonQuestion 3 of 204. What is the main source of water in the water cycle?LakesRiversOceansGroundwaterQuestion 4 of 205. What happens if microbes in the soil are destroyed?Soil becomes more fertileSoil loses its fertilitySoil becomes harderSoil absorbs more waterQuestion 5 of 206. What is the primary cause of ozone layer depletion?Carbon dioxideNitrogen oxidesChlorofluorocarbons (CFCs)MethaneQuestion 6 of 207. Which harmful gas is released by vehicle emissions?OxygenCarbon monoxideHeliumNeonQuestion 7 of 208. What is the main reason for water scarcity?Uneven distribution of waterToo much rainfallOveruse of groundwaterLack of riversQuestion 8 of 209. Why is seawater not suitable for drinking?It contains too much oxygenIt contains high levels of saltIt lacks mineralsIt contains bacteriaQuestion 9 of 2010. What is the best way to conserve water?Let water flow freelyReuse and store waterUse only groundwaterIncrease water wastageQuestion 10 of 2011. Which layer of soil is rich in humus?BedrockSubsoilTopsoilSand layerQuestion 11 of 2012. What happens if the number of factories and vehicles increases?Air quality improvesAir pollution increasesOxygen levels increaseMore plants growQuestion 12 of 2013. What percentage of the Earth's surface is covered by land?10%29%50%71%Question 13 of 2014. Which of the following is an abiotic component of soil?BacteriaWormsRocksPlantsQuestion 14 of 2015. What is the main function of microbes in the soil?Producing oxygenDecomposing organic matterForming sandPreventing plant growthQuestion 15 of 2016. What is an important feature of the atmosphere?It is only made of oxygenIt acts as a filter for harmful radiationIt has no gasesIt contains only dustQuestion 16 of 2017. What happens if all potable water is used up?No effect on lifeWater levels will increaseLiving beings will face survival issuesThe Earth will produce more waterQuestion 17 of 2018. Why is soil erosion a problem?It increases plant growthIt removes fertile topsoilIt adds nutrients to waterIt helps form humusQuestion 18 of 2019. Which factor is necessary for the survival of living organisms?Air, water, and landOnly landOnly airOnly waterQuestion 19 of 2020. What should humans do to maintain natural resources?Use them responsiblyOveruse themWaste themIgnore conservationQuestion 20 of 20 Loading...
Leave a Reply