InterviewSolution
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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.
| 201. |
Photochemical smog includes the reduction ofA. `SO_(2)`B. NOC. `Cl_(2)`D. `NO_(2)` |
| Answer» Correct Answer - D | |
| 202. |
Which of the following statement is not true about classical smog?A. It contains compounds of reducing natureB. it is produced in cold and humic climateC. its main components are produced by the action of sunlight on emissions of automobiles and factoriesD. it contain smoke, fog and `SO_(2)` |
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Answer» Correct Answer - C Classical smog is produced in cold and humid climate and not in sunny and dry climate in which photochemical smog is formed. |
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| 203. |
Photochemical smog is actually a cause of pollution ofA. SoilB. AirC. NoiseD. Water |
| Answer» Correct Answer - B | |
| 204. |
Photochemical smog always containsA. `O_(3)`B. `CO_(2)`C. `CH_(4)`D. |
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Answer» Correct Answer - A Photochemcical smog always contains `O_(3)` |
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| 205. |
Icomplete combustion of petrol in automobile engines can be detected by testing the fuel gases for the presence ofA. `CO_(2), H_(2)O`B. `CO`C. `NO_(2)`D. `SO_(2)` |
| Answer» Correct Answer - 2 | |
| 206. |
Interference in development and maturation of RBC is caused byA. Hg pollutionB. Pb pollutionC. S pollutionD. All of these |
| Answer» Correct Answer - B | |
| 207. |
Acid rain causesA. ChlorosisB. Increasing acidity of soilC. Corroding bridgesD. All of these |
| Answer» Correct Answer - D | |
| 208. |
Which is not a cause of acid rain?A. `NO_(2)`B. `CH_(4)`C. `SO_(2)`D. `CO_(2)` |
| Answer» Correct Answer - B | |
| 209. |
pH of acid rain is approximatelyA. 5.6B. 6.2C. 6.7D. 7 |
| Answer» Correct Answer - A | |
| 210. |
Photochemical smog invovlesA. `O_(3)`B. NOC. `NO_(2)`D. All of these |
| Answer» Correct Answer - D | |
| 211. |
Which of the following gases is not a greenhouse gas ?A. COB. `O_3`C. `CH_4`D. `H_2O` vapour |
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Answer» Correct Answer - A CO is not a green house gas |
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| 212. |
Ulraviolet radiation from sun causes a reaction that produces:A. FluoridesB. carbon monoxideC. PAN formationD. ozone |
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Answer» Correct Answer - D Utltraviolet radiation from sum produces ozone. `3O_(2) overset(UV)(rarr)2O_(3)`. |
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| 213. |
Which one of the following statements regarding photochemical smog is not correctA. Carbon monoxide does not play any role in photochemical smog formationB. Photochemical smog is an oxidizing agent in characterC. Photochemical smog is formed through photochemical reaction involving solar energyD. Photochemical smog does not cause irritation in eyes and throat |
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Answer» Correct Answer - D Photochemical smog does not cause irritation in nose eyes and throat. |
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| 214. |
Carbon monoxide is harmful to human beings as it isA. is carcinogenicB. is antagonistic to `CO_(2)`C. has higher affinity for haemoglobin as compared to oxygenD. is destructive to `CO_(2)` |
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Answer» Correct Answer - C Carbon monoxide has a higher affinity for haemoglobin as compared to oxygen to form carboxy- haemoglobin to stop the flow of blood which causes death. |
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| 215. |
Photochemical smog is formed due to presence ofA. oxides of sulphurB. oxides of nitrogenC. winter during morning time.D. winter during day time. |
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Answer» Correct Answer - B Photochemical smog is formed due to photochemical reaction taking place when air contains `NO_(2)` and hydrocarbons. |
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| 216. |
What do you understand by chlorosis ? |
| Answer» It may be defined as the process of slowing down the formation of chlorophyll in plants due to the presence of `SO_(2)` in air as pollutant. | |
| 217. |
Out of the following select viable particulates:A. smoke, mist , bacteriaB. Becteria, fungi, mist, dustC. Mist, bacteria , algae, dustD. Bacteria, fungi, moulds, alges |
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Answer» Correct Answer - D Paticulate pollutants are the minute solid particles or liquid droplets in air. Viable: These are minute living organisms that are dispersed in the atmosphere as bacteria, fungi, moulds , algae. `Non-Viable: Classified based on nature and size as smoke, mist, dust , fumes. |
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| 218. |
Which one is not a pollutant normally?A. HydrocarbonsB. Carbon dioxideC. Carbon nmonoxideD. Suplhur dioxide |
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Answer» Correct Answer - B Carbon dioxide is not normally considered to be a pollutant |
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| 219. |
What are the reactions involved in removing `SO_2` from the atmosphere by passing it through a solution containing nitrate ions ? |
| Answer» `SO_2+H_2O hArr HSO_3^(-) + H^(+) , HSO_3^(-) + H_2Cit^(-) to underset"(Complex)"(HSO_3.H_2Cit)^(2-)` | |
| 220. |
What is chlorosis ? |
| Answer» Slowing down the formation of chlorophyll in plants due to presence of `SO_2` as pollutant is called chlorosis. | |
| 221. |
The extensive use of `CFCs` as refrigents fluids and in aerosol is because of :A. its high chemical stabilityB. good absorber of UV radiationC. its polar natureD. high toxicity |
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Answer» Correct Answer - A `CFCs` are chemically most stable, colourless, odourless and harmless gases. |
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| 222. |
The secondary precursors of photochemical smog areA. `SO_(2) and NO_(2)`B. `NO_(2)` and hydrocarbonsC. `O_(3)` and PAND. `CO_(2) and O_(2)` |
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Answer» Correct Answer - C The primary precursors of photochemical smog are `NO_(2)` and hydrocarbons and the secondary precursors are ozone and PAN. |
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| 223. |
Which of the following statements (I)-(IV) are true about photochemical smog?A. I,II and IVB. II,III and IVC. I,III and IVD. I,II and III |
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Answer» Correct Answer - D (Undurnt hydrocarbons+NO) from automoblies `NO overset(sunlight)(rarr) NO_(2)` `NO_(2) rarr NO+O` `O+O_(2) rarr O_(3)` `O_(3)+NO rarr NO_(2)+O_(2)` `NO_(2)` and `O_(3)` both the strong oxidizing agents. Undurnt fuel is oxidized to formaldehyde and acrolein and `PAN`. `CH_(4)+O_(3) rarr HCHO` `CH_(3)CH_(2)CH_(3) overset(O_3)(rarr) CH_(2) = CHCHO` |
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| 224. |
The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was:A. PhosgeneB. MethylisocyanateC. MethylamineD. Ammonia |
| Answer» Correct Answer - B | |
| 225. |
Gas released during Bhopal tragedy wasA. Methyl isocyanateB. Potassium isothiocyanateC. Sodiium isothiocyanateD. Ethyl isothiocyanate |
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Answer» Correct Answer - A Gas released during Bhopla tragedy was methuyl isocyanate |
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| 226. |
Modes of controlling pollution in large cities includes:A. cleanlines and less use of insecticidesB. porper disposal of organic wastes , sewage and industrial effluentsC. use of liquefied carbon dioxide with a suitable detergen in places of tetrachloroethene for dry cleaningD. all the above |
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Answer» Correct Answer - D In large cities pollution can be controlled by accepting green chemistry. |
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| 227. |
The threshold limit value or CO in the air is nearly ____whereas that of `CO_2` is nearly _________ |
| Answer» Correct Answer - 40 ppm , 5000 ppm | |
| 228. |
The most adverse effect of radioactive pollutantsA. Gene mutationB. HepatitisC. PolioD. TB |
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Answer» Correct Answer - A Radioactive pollution causes gene mutation. It can change the base squence of DNA |
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| 229. |
CO is more toxic than `CO_2` becauseA. It affects the nervous systemB. It damages lungsC. It reduces the oxygen carrying capacity of haemoglobinD. It forms acid with water |
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Answer» Correct Answer - C CO is more toxic than `CO_2` because it bounds with haemoglobin resultant is less amount of haemoglobin to carry oxygenated blood |
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| 230. |
Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_2` etc. is known asA. Greenhouse effectB. Ozone layer effectC. Radioactive effectD. Solar effect |
| Answer» Correct Answer - A | |
| 231. |
Today the concentration of green house gases is very his because ofA. Use of refrigeratorB. Increased combustion of oils and coalC. DeforestationD. All of the above |
| Answer» Correct Answer - D | |
| 232. |
Which of the following gases is not green house gas ?A. `CO`B. `O_(3)`C. `CH_(4)`D. `H_(2)O` vapour |
| Answer» Correct Answer - 1 | |
| 233. |
Assertion (A) : Acid rain reduces the fertility of the soil. Reason (R) : Acid rain has a corroding effect on marble buildings.A. Both A and R are true and R is the correct explanation of A.B. Both A and R are true but R is not correct explanation of A.C. A is true and R is falseD. A is false and R is true. |
| Answer» Correct Answer - 2 | |
| 234. |
Which of the following statement is false?A. The lower the contration of dissolved oxygen , the more polluted is the water sampleB. the torlerable limit of lead in drinking water is ppmC. Water is considered pure if it has `BOD` less then ppmD. none of the above |
| Answer» Correct Answer - D | |
| 235. |
Fishes die in water bodies polluted by swage due to :A. PathogensB. clogging of gills by siltC. reduction in oxygenD. Foul smell |
| Answer» Correct Answer - C | |
| 236. |
The disease of lungs commonly found in industrial workers due to entry of particulates in the lungs is called _____ |
| Answer» Correct Answer - pneumoconiosis | |
| 237. |
What is ozone and how does it affect any ecosystem? |
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Answer» Ozone in stratosphere is a product of action of UV-radiations on dioxygen `(O_(2))` molecules the UV radiation split apart molecular oxygen into free oxygen atoms. These oxygen atoms combine with the molecular oxygen to form ozone . `O_(2)(g) overset(hc)underset("UV-radiation")rarr O + O` `O_(2)(g) + O(g) underset("radiations")overset(UV)rarr O_(3)` |
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| 238. |
Biodegrafdable pollutant isA. PlasticB. AsbestosC. SewageD. Mercury |
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Answer» Correct Answer - C Sewage is a biodegradable pollutant |
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| 239. |
Water pollution is mainly due toA. Suphur dioxideB. Carbon dioxideC. OxygenD. Industrial discharges |
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Answer» Correct Answer - D Water pollution is maoinly duie to industrial discharge |
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| 240. |
Which of the following is not a herbicide?A. Sodium cholrateB. Sodium arsenateC. PhosphateD. Triazines |
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Answer» Correct Answer - C Phosphate is not a herbicide it is a fertiliser. |
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| 241. |
Select non=biodegradable industrial wasteA. Waste from cotton millsB. Waste from paper millsC. Fly ash from thermal power plantsD. Waste from tood processing units. |
| Answer» Correct Answer - C | |
| 242. |
Statement-1: Water is polluted by organic wastes and Statement-2: The amount of organic wastes is measured by the BOD.A. Statement-1: is True, Statement-2 is True, Statement-2 is a correct explanantion for Statement-1B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1C. Statement:1 is True, Statement -2 is FalseD. Statement-1 is False, Statement-2 is True |
| Answer» Correct Answer - B | |
| 243. |
Biodegradable wastes are mixed with water and cultured from bacterial species which produces a gas calledA. Methane gasB. Ethane gasC. Propane gasD. Butane gas |
| Answer» Correct Answer - A | |
| 244. |
Which one of the following is not a non-biodegradable industrial waste?A. Gypsum from fertilizer industriesB. Mud and tailings from metal industriesC. Slag from stell industriesD. Waste from textile industries. |
| Answer» Correct Answer - D | |
| 245. |
Assertion (A) : Rain water normally has a `P^(H)` of `le 5.6`. Reason (R) : This is due to the presence of `H_(2)SO_(4)` and `HNO_(3)` produced from oxides of sulphur and nitrogen.A. Both A and R are true and R is the correct explanation of A.B. Both A and R are true but R is not correct explanation of A.C. A is true and R is falseD. A is false and R is true. |
| Answer» Correct Answer - 1 | |
| 246. |
Assertion (A) : Acid rains have been reported in some places which are far away from the placed where industries are located. Reason (R) : Rain clouds move from the idustrial areas to the other areas due to the below of windA. Both A and R are true and R is the correct explanation of A.B. Both A and R are true but R is not correct explanation of A.C. A is true and R is falseD. A is false and R is true. |
| Answer» Correct Answer - 1 | |
| 247. |
A common disnfectant used in village wells isA. Potassium permanganateB. iodine and bromineC. ozone gasD. free chlorine |
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Answer» Correct Answer - A Potassium permanganate `(KMnO_(4))` is the best disinfectant for village wells (as well as for domestic water storage tanks). |
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| 248. |
Besides `CO_(2)` the other greenhouse gas isA. `CH_(4)`B. `N_(2)`C. ArD. `O_(2)` |
| Answer» Correct Answer - A | |
| 249. |
Which one of the following statement is false?A. `O_(3)` layer is destroyed by `CFCs`B. `O_(3)` involved in photochemical smogC. A product of photochemical smog is `CO_(2)`D. Smog reduces visibility |
| Answer» Correct Answer - 3 | |
| 250. |
Besides `CO_(2)` the other greenhouse gas isA. `CH_(4)`B. `N_(2)`C. `Ar`D. `O_(2)` |
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Answer» Correct Answer - A Greenhouse gases are `CO_(2), CH_(4),O_(3),N_(2)O, CFCs` and water vapours. |
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