Est Topic 2 PDF

Topic 2: Natural Resources and Associated Problems (10 Marks) Q. No. Question Option i Option ii Option iii Option iv Answer Key which of the following is n...

Topic 2: Natural Resources and Associated Problems (10 Marks) Q. No. Question Option i Option ii Option iii Option iv Answer Key which of the following is not a renewable dentrotherm 1 coal wind power geothermal energy coal resource? al energy providing economic land erosion 2 forest is responsible for a watershed protection land erosion control and all of given control environment al benefits. any material that can be transformed into none of the 3 more valuable and usefull product or service resource mineral product resource above. is called India has largest reserve of ---------------after 4 iron ore bauxite coal copper. iron ore Brazil. a sudden uncontrol descent of a mass of 5 soil erosion minning landslide earth quake landslide earth under the force gravity is called. compensate for loss due stored in xylem are used by plants to are of no use for 6 hydroscopic and combined water. tissues of are of no use for plants. during transpiration evapotranspi plants. plants ration by plants. 45percent 42percent methane 55 percent 25 percent water methane ,8 55 percent ,20percent methane,45perc 7 the constituents of producer gas are. vapour,75 percent percent methane,45percentcarb carbondioxid entcarbon methane. propane ,rest is on dioxide. e,35 dioxide. carbon dioxide. percentpropa ne. the least quality of the coal with 95%carbon 8 liginite coal anthracite coal bituminous coal peat coal. anthracite coal conent and 5% volatile matter is which of the following methods of timber slective logging reduced reduced impact 9 extraction cause minimum environmental clear felling hand logging d)reduced impact impact logging damage? logging logging Q. No. Question Option i Option ii Option iii Option iv Answer Key provide 10 the main purpose of dam construction irrigation flood control hydroelctricity water to hydroelctricity industry Which one of the following is an example of 11 Wind Vegetation Coal & Minerals Water Coal & Minerals Non - Renawable Energy Resource Who have started reducing emissions from United States & World All of the United States & 12 Russia & Europe UK & Brazil deforestration and forest degradation Bank Above World Bank What was the approximate world 13 667 million 66 billion 6.67 billion 6.67 million 6.67 billion population of humans in the year 2008 None of the 14 Dam makes Water Toxic _ _ _ _ TRUE FALSE Both TRUE above Industrilized agriculture involves use of _ _ _ All of the 15 Fossil Fuel Water Commertial Fertilizers All of the Above _ Above When the concentration of nitrates in water Blue baby Blue baby 16 exceeds 45 mg/L, they become the cause of Luckemia Cancer Paralysis syndrome syndrome a serious health hazard called _ _ _ _ Lithosphere is Lithosphere Lithosphere includes Lithosphere underlain by Lithosphere provides is broken 17 Which is not True? the crust and the provides the Timber into tectonic uppermost mantle Timber atmosphere plates Short fall in Short fall in Short fall in over all The biggest crises of the 21st century was over all crop Short fall in over all None of the over all crop 18 crop production in caused due to _ _ _ _ production in crop production in Asia above production in the world India the world 1969/70 till 1963/64 till 1946/47 till 1967/70 till 19 Green rovolution takes place in year _ _ _ _ 1967/70 till 1977/78 1979/80 1973/74 1956/57 1977/78 Soil erosion due to mining is _ _ _ _ times 20 10 20 30 15 10 more than all rivers Q. No. Question Option i Option ii Option iii Option iv Answer Key It has evolved It can also be It is the global sum of all It does not contain at least some It does not contain 21 Which is false about biosphere? called the zone the ecosystems microbes 3.5 billion microbes of life on Earth years ago Which option below is not an example of untreated 22 smog in delhi nuclear waste overpopulation overpopulation pollution? sewage blocking flooding of electric energy Which one of the not a disadvantages of the big electric energy generated upstream 23 extremely expensive prime arable generated from dam? from hydropower migration of land hydropower salmon This area has no permanent roads or settlements and is maintained primarily for its primitive primitive 24 wilderness area national park national forest wilderness area character and non-motorized recreation. It is recreation area a………………………….. Forests can be Oxygen content may said to behave Fishes are capable of not get reduced if forest like non- reproducing at the rate at None of the 25 Which is true? None of the above cover is not sufficient renewable which they are being above on the earth resources if not caught. overused. remain on earth in a become waste all of the 26 Non-renewable resources, once used………… are recycled all of the above different form material above Which one of the following is an example of non- 27 Wind Vegetation Coal and Minerals Water Coal and Minerals renewable resources? 28 Which one of the following in not a fossil fuel? Petroleum Coal Natural gas Uranium Uranium _________________ is the major raw material for Waste from 29 Tree leaves Grass Cow dung Cow dung biogas. kitchen 30 The earth's surface covered by water is ________ 75% 80% 60% 65% 75% Primary Secondary Primary consumers are Producers are consumers Producers are more than consumers are 31 What is true of Ecosystem? least dependent upon more than primary outnumber primary consumers largest and producers consumers producers powerful Q. No. Question Option i Option ii Option iii Option iv Answer Key phytoplankton- grass-chameleon-insect- grass-fox-rabbit- fallen leaves-bacteria- phytoplankton- 32 pick up the correct food chain zooplankton- bird bird insect larvae zooplankton-fish fish Association of animals when both partners are 33 Mutualism Colony Commensalism Ammensalism Mutualism benefited The dominant second trophic level in a lakh 34 Plankton Phytoplamkton Benthos Zooplankton Zooplankton ecosystem is