Environment: No.QuestionAnswer 01The biggest energy source on the surface of the earth isSolar radiation 02The acid found in soil isHumic acid 03Burning of fossil fuels releasesCarbon-di-oxide 04The place referred to as the Valley of Death isCubatao in Brazil 05The Valley of Flowers is located atGarhwal in Himalayas 06The element found abundant in the crust of the earth isOxygen 0799 percent of the crust of earth is composed ofElements 08The crust of the earth is calledLithosphere 09The type of soil found in the dessert isAridisols 10Acid rain was discovered byR.A.Smith 11The simplest and least polluting way of deriving energy isSolar energy 12Junk of appliances and vehicles is known asSolid Waste 13Oceans are ecologically divided into how many regionsFive 14Uranium miners more frequently suffer fromCancer 15Textile workers more frequently suffer fromByssinosis 16Coal miners more frequently suffer fromBlack lung diseases 17The type of living beings more sensitive to nuclear radiations areMammals 18The most acute pollution problem faced by nuclear power industry isDisposal of nuclear waste 19Excessive inhalling of manganese causesPnemonia 20Hay fever is due to the presence of which thing in the airPollen 21The metal which causes systemic poisoning in man isLead 22Dust containing silica causesSilicosis 23Intensive use of nitrate fertilizers causesMethemoglobinemia 24The most economic and pollution free form of transport isBicycle 25The main source of harmful radiations in our house can be due toTelevisions 26The most recently discovered ecosystem isVent 27The most biologically productive ecosystem isAlluvial plains 28Ecologists divide divide lakes into how many zonesThree 29Death valley is located in which dessertNevada 30Man first cultivated crops in which ageNeolithic 31Sheep were initially dpmesticated forMeat and milk 32The industrial chemical which increases the chance of developing Leukemia isBenzene 33The Royal society for the Protection of Birds was formed in1889 AD 34`Man and the Biosphere'an ecological programme was launched byUNESCO 35Chemicals which get rid of pests are called asPesticides 36The living beings which are known as teritary consumers areMeat-eating animals 37A motor car produces least amount of pollution whileMoving 38The first living beings who established themselves on rocky slopes wereLichens 39Birds evolved on earth during theJurassic period 40Water covers about how many percent of the earth's surfaceSeventy 41Oxygen was discovered byJoseph Priestley 42Oxygen was discovered inAugust 1774 43The word `Oxygen'was coined byAntonie Levoiser 44When something burns in air, it combines with oxygen and the process is calledOxidation 45When we breather,oxygen combines chemically with glucose in the body to createEnergy 46The two major components of air are oxygen andNitrogen 47The French chemist who showed that air was the same all around the world wasHenri Regnault 48William Ramsay discovered that air also contained tiny traces ofInert gases 49The gases which are slow to react with other chemicals are calledInert gases 50The air surrounding the earth is forever on the move because ofSun's heat 51A space with nothing in it is calledVacuum 52Air pressure is related to density of air. This was discovered by whom in 1662 ADRobert Boyle 53Earth's atmosphere has how many layersFive 54Moon gets very hot and very cold as it has noAtmosphere 5578 percent of the atmosphere isNitrogen 5621 percent of the atmosphere isOxygen 57The atmospheric layer immediately around the earth is calledTroposphere 58The second atmospheric layer is calledStratosphere 59The third atmospheric layer is calledMesosphere 60The fourth atmospheric layer is calledIonosphere 61The fifth atmospheric layer is calledExosphere 62Human beings inhale what and give out whatOxygen,carbon dioxide 63Plants inhale what and give out whatCarbon dioxide,oxygen 64Bubbles in soda water is due to presence ofCarbon dioxide 65Ozone is actually a form ofOxygen 66We are protected from ultraviolet radiation from the sun due to the presence ofOzone layer 67The main culprit which is destroying the ozone layer isCFC gases 68The main green house gas isCarbon dioxide 69As one goes higher in the atmosphere,air pressureDecreases 70As per Daniel Bernoulli,whenever air moves,its pressureDrops 71The most common compound on earth isWater 72Life originally emerged fromWater 73About how many percent of the world's water is solidTwo 74Less than how many percent of the world's water is fresh waterThree 75The amount of water vapour in the atmosphere is known asHumidity