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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Which one of the following statement is true?A. The greater the BOD of waste water, more is its polluting potential.B. The greater the BOD of waste water, less is its polluting potential.C. The lesser the BOD of waste4ater, more is its polluting potential.D. The lesser the BOD of waste water, less is its polluting potential. |
| Answer» Correct Answer - C | |
| 252. |
Which one of the following pairs is mismatched?A. Nuclear power- Radioactive wastesB. Solar energy - Greenhouse effectC. Fossil fuel burning- Release of `CO_(2)`D. Biomass burning-Release of `CO_(2)` |
| Answer» Correct Answer - D | |
| 253. |
Which one of the following pairs is mismatched?A. Fossil fuel burning—release of `CO_2`B. Nuclear power—radioactive wastesC. Solar energy—green house effectD. Biomass burning—release of `CO_2` |
| Answer» Correct Answer - C | |
| 254. |
Identify the correctly matched pair:A. Bansal convention: Biodiversity conservationB. Kyoto protocol : Climate changeC. Montreal protocol : Global warmingD. Ramsar convention : Ground water pollution |
| Answer» Correct Answer - B | |
| 255. |
Which one of the following pairs is mismatched?A. fossil fuel burning : release of `CO_(2)`B. nuclear plant : radioactive wastesC. solar energy : greenhouse effectD. becomes burning: release of `CO_(2)` |
| Answer» Correct Answer - C | |
| 256. |
Carbon monoxide is pollutant as it:A. it reacts with `O_(2)`B. it inhibits glycosisC. it reacts with haemoglobinD. it makes nervous system inactive |
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Answer» Correct Answer - C Carbon monoxide, (CO) when inhaled, combines with blood haemoglobin to form carboxy haemoglobin at a rate 210 times faster than the oxygen forms oxyhaemoglobin. This, respiration is impaired. |
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| 257. |
Which one of the following organism is used as indicator of water quality ?A. BeggiatoaB. ChlorellaC. AzospirillumD. Escherichia |
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Answer» Correct Answer - D A variety f the enteric group of bacteria (facultative , aerobic) reside in the human large intestine (e.g. E. coli). Therefore, their presence in water supply indicates that water supply has been contaminated by sewage. |
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| 258. |
The supersonic jets cause pollution by thinning of:A. `CO_(2)` layerB. `SO_(2)` layerC. `O_(2)` layerD. `O_(3)` layer |
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Answer» Correct Answer - D Ozone layer is found in the stratosphere. It protects us from the harmful UV radiations coming from the sun. The supersonic aircrafts flying at stratospheric heights cause major disturtances in ozone level due to release of CFCs which reacts with `O_(3)` present there, thus cause thinning of `O_(3)` layer. |
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| 259. |
The supersonic jets cause pollution by thinning of:A. `O_(2)` layerB. `O_(3)` layerC. `CO_(2)` layerD. `SO_(2)` layer |
| Answer» Correct Answer - B | |
| 260. |
Effects of air pollution are usually seen on theA. leavesB. flowersC. stemsD. roots |
| Answer» Correct Answer - A | |
| 261. |
"Ozone Day" is observed on:A. `"30 January"`B. `"29 April"`C. `"16 September"`D. `"25 December"` |
| Answer» Correct Answer - C | |
| 262. |
$ Heritiera has pneumatophores. ! Respiratory roots are also called pneumathodes.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 263. |
Ramsar Convention is related toA. conservation of weatlandsB. sustainable developmentC. nuclear waste managementD. global warming |
| Answer» Correct Answer - A | |
| 264. |
Mulching is helpful inA. Increasing soil fertilityB. Improvement of soil structureC. Moisture and soil conservationD. Better crops |
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Answer» Correct Answer - C Mulching is helpful in moisture and sail conservat ion. |
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| 265. |
The purpose of biological treatement of water -water is toA. Reduce sedimentationB. Increases sedimentationC. Reduce BODD. Increase BOD |
| Answer» Correct Answer - C | |
| 266. |
The highest DDT concentration in aquatic food chain shall occur inA. PhytoplanktonB. SeagullC. CrabD. eel |
| Answer» Correct Answer - B | |
| 267. |
The highest DDT concentration in aquatic food chain shall occur in:A. PhytoplanktonB. Sea Guil/BirdsC. CrabD. Eel |
| Answer» Correct Answer - B | |
| 268. |
The highest DDT concentration in aquatic food chain shall occur in:A. crabB. eelC. seagullD. phytoplankton |
| Answer» Correct Answer - C | |
| 269. |
Match the following `{:(1.,"Acid rain",(A),"Biological amplification"),(2.,"DDT",(B),"Minral pollution"),(3.,"BOD",(C ),"Smog"),(4.,"Eutrophication",(D),"Sewage pollution"),(5.,"PAN",(E ),SO_(2)):}`A. 1-(E ), 2-(A), 3-(D), 4-(B) , 5-(C )B. 1-(E ), 2-(D), 3-(A), 4-(B) , 5-(C )C. 1-(C), 2-(D), 3-(A), 4-(B) , 5-(E)D. 1-(C), 2-(B), 3-(D), 4-(A) , 5-(CE) |
| Answer» Correct Answer - B | |
| 270. |
NEERI isA. National Environmental Engineering Research Institute, NagpurB. National Ecological and Enviornmental Research Institute, PuneC. National Engencies and Ecological Research Institute, MumbaiD. National Ethological and Ecological Research Institute , New Delhi |
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Answer» Correct Answer - A CPHERI- Central Public Health Engineering Research Institute. |
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| 271. |
The concentration of DDT in the food chain, from lower to higher trophic levels:A. IncreasesB. DecreasesC. Increases or decreasesD. Remains constant |
| Answer» Correct Answer - A | |
| 272. |
NEERI isA. National Environmental engineering research instituteB. National ecological and environmental research instituteC. National ethological and ecological research instituteD. National Eugenics and Ecological Research institues. |
| Answer» Correct Answer - A | |
| 273. |
The biological amplification of DDT in the various trophic levels is known asA. Green house effectB. biomagnificationC. EutrophicationD. Pollution. |
| Answer» Correct Answer - B | |
| 274. |
Increasing concentration of DDT in organisms of a food chain in higher trophic levels is known asA. biological chainB. biological valueC. biological magnificationD. biotic potential |
| Answer» Correct Answer - C | |
| 275. |
The concentration of DDT in the food chain, from lower to higher trophic levels:A. Remain sameB. Decreases in glaciersC. IncreasesD. Unpredictable |
| Answer» Correct Answer - C | |
| 276. |
A dental disease characterised by mottling of teeth is due to the presence of certain chemical element in drinking water. Which of the following is that element?A. FluorineB. BoronC. MercuryD. Chlorine |
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Answer» Correct Answer - A Excess fluoride in drinking water causes teeth deformity. |
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| 277. |
A dental disease characterised by mottling of teeth is due to the presence of certain chemical element in drinking water. Which of the following is that element?A. mercuryB. fluorineC. BoronD. Chlorine |
| Answer» Correct Answer - B | |
| 278. |
Identify the heavy metals from the following. a. Cadmium (Cd) b. Copper (Cu) c. Chromium (Cr) d. Cobalt (Co) e. Mercury (Hg) f. Lead (Pb)A. a, b, e and fB. a, b, c and dC. c, d, e and fD. a, b, c, d, e and f |
| Answer» Correct Answer - D | |
| 279. |
Realizing the significance of participation by local communities the Government of India has introduced the concept ofA. Jhum CultivationB. Jhum Forest ManagementC. Joint Farmer Management -D. Joint Forest Management |
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Answer» Correct Answer - D Realising the significance of participation by local communities the Government of India has introduced the concept of Joint Forest Management (JFM). |
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| 280. |
Two major environmental issues of global nature areA. Soil erosion and desertificationB. Waterlogging and soil salinityC. Global warming and ozone depletionD. Desertification and urbanistion |
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Answer» Correct Answer - C Two major environmental issues of global nature are global warming and ozone depletion. |
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| 281. |
Which is wrong?A. Most forests have been lost in tropical areasB. Greenhouse effect is natural phenomenonC. Ozone in upper part of atmosphere is harmful to animalD. Eutrophication is natural phenomenon in fresh water bodies. |
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Answer» Correct Answer - C Ozone in lower part of atmosphere is harmful to animals. |
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| 282. |
The fertile top soil can be removed by/soil erosion is due to a. Over-cultivation b. Unrestricted grazing c. Afforestation d. Poor irrigation practicesA. a, b and cB. a, b and dC. b, c and dD. a, b, c and c |
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Answer» Correct Answer - B The fertile top-soil can be removed by soil erosion is due to Over-cultivation Unrestricted grazing Poor irrigation practices Deforestation |
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| 283. |
Removal of the soil by the action of wind and water is known asA. ErosionB. FossilizationC. LeachingD. Calcification |
| Answer» Correct Answer - A | |
| 284. |
Which component of a fertile soil is reduced as the result of burning crops?A. CalciumB. ClayC. HumusD. Sand |
| Answer» Correct Answer - C | |
| 285. |
Read the following statements carefully and select the incorrect ones. (i) Development of the fertile top-soil takes centuries, but it can be easily removed due to human activites such as over-cultivation, unrestricted grazing, etc. (ii) Waterlogging results in soil salinity. (iii) UV rays are responsible for degradation of ozone shield in atmosphere. (iv) Ozone present in troposphere acts as a shield abosrbing UV radiations coming from the Sun. (v) Global warming can be controlled by increasing the use of fossil fuels.A. (i), (iii) and (v)B. (iii), (iv) and (v)C. (iv) and (v)D. (i), (ii) and (iii) |
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Answer» Correct Answer - C Ozone present in the stratosphere act as a shield absorbing UV radiations coming from the sun. Global warming can be controlled by cutting down the use of fossil fuels. |
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| 286. |
Deforestation will decreaseA. Soil erosionB. Land slidesC. Soil fertilityD. Rainfall |
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Answer» Correct Answer - D Deforestation will decrease rainfall. |
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| 287. |
Biodiversity increases from equator to poles. |
| Answer» Correct Answer - F | |
| 288. |
Removal of top fertile soil by wind or water isA. SiltationB. Soil erosionC. Weathering of soilD. Leaching |
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Answer» Correct Answer - B Removal of top fertile soil by wind or water is soil erosion. |
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| 289. |
Loss of forests, urbanization, increasing pollution are all due to :A. greenhouse effectB. global warmingC. ozone depletionD. population explosion |
| Answer» Correct Answer - B | |
| 290. |
Savannahs are tropical rain forests. |
| Answer» Correct Answer - F | |
| 291. |
Sacred forests are traditional protected area. |
| Answer» Correct Answer - T | |
| 292. |
Main cause of soil erosion isA. AfforestationB. Less rainsC. Thinning of ozone layerD. Deforestation |
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Answer» Correct Answer - D Main cause of soil erosion is deforestation. |
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| 293. |
Forests take part in :A. Control of atmospheric pollutionB. Prevention of soil erosionC. Maintenance of natural balanceD. All of the above |
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Answer» Correct Answer - D Forests take part in control of atmospheric pollution, prevention of soil erosion and maintenance of natural balance. |
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| 294. |
Forests destruction results inA. Loss of wild lifeB. Floods and droughtC. Soil erosionD. All of the above |
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Answer» Correct Answer - D Forests destruction results in loss of wild life, floods and drought and soil erosion. |
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| 295. |
Assertion: A mere 0.1 per cent impurities make domestic sewage unfit for human use. Reason: Domestic sewage primarily contains biodegradable organic matter.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false. |
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Answer» Correct Answer - B A mere 0.1 per cent impurities make domestic sewage unfit for human use. Domestic sewage primarily contains biodegradable organic matter. |
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| 296. |
Assertion: Human population size has grown enormously over the last hundred years. Reason: Increasing population creates more demand for food, water, home, electricity, roads and automobiles that exerting tremendous pressure on our natural resources, and are also contributing to pollution of air, water and soil.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false. |
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Answer» Correct Answer - B Human population size has grown enormously over the last hundred years. Increasing population creates more demand for food, water, home, electricity, roads and automobiles that exerting tremendous pressure on our natural resources, and are also contributing to pollution of air, water and soil. |
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| 297. |
Assertion: CNG is better than diesel/petrol Reason: Unlike petrol or diesel, CNG burns more efficiently in the automobiles and very little of it is left unburnt.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false. |
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Answer» Correct Answer - A CNG is better than diesel/petrol as unlike petrol or diesel, CNG bums more efficiently in the automobiles and very little of it is left unburnt. |
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| 298. |
(A) : Motor vehicles equipped with catalytic converter should use unrelated petrol. (R) : Lead in petrol inactivates the catalyst.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false. |
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Answer» Correct Answer - A Motor vehicles equipped with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst. |
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| 299. |
What is particular matter? How do particular matters harm human health? |
| Answer» The particular matter consists of solid or liquid particles present in the air. These may be settleable particles (e.g., sand, water droplets) or suspended particles (e.g., dust) or non-settleable particles (e.g., tobacco smoke). | |
| 300. |
How do automobiles filled with catalytic converters reduce air pollution ? Suggest the best fuel for such vehicles. |
| Answer» As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into `CO_(2)` and `H_(2)O`, and carbon monoxide and nitric oxide and changed to `CO_(2) " and" N_(2)` gas respectively. Sulphur-free and unleaded petrol is the best fuel for such vehicles. | |