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.
| 51. |
Ozone hole is maximum overA. EuropeB. AntarcticaC. IndiaD. Africa |
| Answer» Correct Answer - B | |
| 52. |
In the formation of photochemical smog which of the following does not take place?A. `NO_(2(g)) overset(hv)(rarr) NO_((g))+O_((g)), O_((g))+O_(2(g)) rarr O_(3(g))`B. `NO_((g))+O_(3(g)) rarr NO_(2(g))+O_(2(g))`C. `3CH_(4(g))+2O_(3) overset(NO_(2))(rarr) 3CH_(2) =O+3H_(2)O`D. `CH_(2) =O+H_(2) rarr CH_(3)OH` |
| Answer» Correct Answer - 4 | |
| 53. |
Result of ozone hole isA. Green house effectB. Global warmingC. Acid rainD. Uv rays reach the earth |
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Answer» Correct Answer - D As a result of ozone hloe U.V rays reach the earth |
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| 54. |
Bio-degradable pollutant isA. Domestic wasteB. DDTC. Mercury saltD. Aluminimum foil |
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Answer» Correct Answer - A Domestic waste is a bio degradable pollutant |
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| 55. |
Which is a degradable pollutantA. Mercury saltsB. Aluminium foilC. Domestic wastesD. D.D.T. |
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Answer» Correct Answer - C Domestic wastage are mainly made up of degradable organic compounds. |
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| 56. |
Lung disease are four times more in Urban areas than Rural area. This is due to the presence of whichA. `SO_(2)`B. `CO_(2)`C. `N_(2)`D. Water vapour |
| Answer» Correct Answer - 1 | |
| 57. |
Diesel vehicles pollute the environment largely through (A) `CO` (B) `NO_(x)` (C) ParticulatesA. A & BB. B & CC. C & AD. A, B & C |
| Answer» Correct Answer - 4 | |
| 58. |
Assertion: As the `pH` of water decreases , the solubility of metal ions increases. Reason: Water having `pH lt 5.5` is not suitable for drinking purposes.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true and the reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true. |
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Answer» Correct Answer - D Correct Reason: acidic water `(pH lt 5.5)` contains high concentration of dissolved salt and toxic metal ions and thus is not suitalbe for drinking purposes. |
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| 59. |
Which of the following is/are weedicides? (A) Sodium chlorate (B) DDT (C) Sodium arsenate (D) BHCA. A, CB. A, BC. A, DD. B, D |
| Answer» Correct Answer - 1 | |
| 60. |
DDT can act asA. InsecticideB. WeedicideC. RodenticideD. Nerve toxins |
| Answer» Correct Answer - 4 | |
| 61. |
DDT isA. An antibioticB. A fertilizerC. A non degradable pollutantD. Dichloro difluoro titanium |
| Answer» Correct Answer - 3 | |
| 62. |
`DDT` isA. a fertilizerB. biodegradable PollutantC. greenhouse gasD. non-biodegradable pollutant |
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Answer» Correct Answer - D DDT is non-biodegradable pollutant. |
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| 63. |
Tropospheric pollution is mainly due toA. gaseous air pollutantsB. particulate pollutantsC. both (a) and (b)D. None of these |
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Answer» Correct Answer - C Gaseous air pollutants - oxides of sulphur , carbon and nitrogen `(SO_(2), CO,CO_(2),NO_(2)), H_(2)S`, hydrocarbons, ozone . Pariculate pollutant , Dust, mist fumes, smoke , smog, (PAN). |
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| 64. |
The common component/s of photochemical smog i/areA. `CH_(2)O`B. `NO_(2)`C. AcroleinD. All |
| Answer» Correct Answer - 4 | |
| 65. |
Which one of the following is not a common component Photochemical SmogA. AcroleinB. ChlorofluorocarbonsC. OzoneD. Peroxyacetyl nitrate |
| Answer» Correct Answer - B | |
| 66. |
Phosphate pollution is caused byA. sewage and agriculture fertilizersB. agriculture fertilizers onlyC. phosphate rocks and sewageD. weathering of phosphate rocks only |
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Answer» Correct Answer - A Sewage and agricultural fertilizers cause phosphate pollution. |
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| 67. |
Phosphate pollution is caused byA. Phosphate rock onlyB. Agricultural fertilizers onlyC. Sewage and phosphate rockD. Sewage and agricultural fertilizers |
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Answer» Correct Answer - D Man has been releasing large quantities of phosphorus into the biosphere in the form of agricultural fertilizers (Superphosphates) and synthetic detergents |
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| 68. |
Which of the following statements about polar stratosphere clouds `(PSCs)` is not correct?A. `PSCs` do not react with chlorine nitrate and `HCl`B. Type I coluds are formed at about `-77^(@)C` and contain solid `HNO_(3).3H_(2)O`C. Type II clouds are formed at about `-85^(@)C` and contain some iceD. A tight whirlpool of wind called polar vortex is formed which surrounds Antarctica |
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Answer» Correct Answer - A `PSCs` react with cholrine nitrate and `HCl` to give `HOCl` and `Cl_(2)`. |
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| 69. |
Smog is essentially caused by the presence ofA. `O_(2)` and `O_(3)`B. `O_(3)` and `N_(2)`C. oxides of sulphur and nitrogenD. `O_(2)` and `N_(2)` |
| Answer» Correct Answer - C | |
| 70. |
Increased level of greenhouse gases cause global warming which result inA. biomagnificationB. eutrophicationC. melting of glaciersD. ozone depletion |
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Answer» Correct Answer - C Global warming may result in increase in average temperature of the earth and melting of glaciers. |
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| 71. |
How carbon monoxide, emitted by automobiles, prevents transport of oxygen in the body tissuesA. By changing oxygen into carbon dioxideB. By destroying the haemoglobinC. By forming a stable compound with haemoglobinD. By obstructing the reaction of oxygen with haemoglobin |
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Answer» Correct Answer - C Carbon monoxide when inhaled combines with haemoglobin more rapidly than oxygen . It blocks the oxygen transport by forming stable compound carboxyhaemoglobin. It prolonged inhalation may lead to death. |
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| 72. |
Taj Mahal is reported to be affected by :A. Flood in yamunaB. Temperatrure mediated spoilage of marbleC. Air pollutantfrom Mathura refineryD. All the above |
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Answer» Correct Answer - C Taj may be destroyed by air pollutants from Mathura refinery |
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| 73. |
Taj Mahal is threatened by pollution fromA. ChlorineB. Suphur dioxideC. HydrogenD. Oxygen |
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Answer» Correct Answer - B Taj mMahal is threatened by pollution from suphur dioxide |
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| 74. |
Consider the following reactions provided by scientists working in Antrctica about ozone hole. (I) `ClO^(.)+NO_(2) rarr ClONO_(2)` (II) `Cl^(.)+CH_(4) rarr overset(.)(C )H_(3)+HCl` (III) `ClONO_(2)+H_(2)O rarr HOCl+HNO_(3)` (IV) `ClONO_(2)+HCl rarr Cl_(2)+HNO_(3)` In summer season, there is less depletion of ozone layers due to reactions.A. both I and IIIB. both III and IVC. Both I and IID. Both II and IV |
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Answer» Correct Answer - C In summer season, reaction `I` and reaction II take place, `Coverset(.)(I)` (which cause depletion) is eliminated, hence less destruction to `O_(3)` layer. |
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| 75. |
Taj Mahal appearance is affected by pollution fromA. HydrocarbonsB. Oxides of nitrogenC. Oxides of sulphurD. Both 2 & 3 |
| Answer» Correct Answer - 4 | |
| 76. |
It is said Taj Mahal may be destroyed due toA. Flood in Yamuna riverB. Decomposition of marble as a result of high temperatureC. Air pollutants released from oil refinery of MathuraD. All the above |
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Answer» Correct Answer - C Yellowing and blackening of Taj Mahal at Agra is due to `SO_2` and other pollutants released by Mathura refinery |
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| 77. |
To prevent damage of Taj Mahal the required measure/s is/areA. People in Taj Trapezium shall use liquified petroleum gas instead of coal or oilB. Automobiles on high ways shall use low suphur content diesel.C. Prevention of industries which allow `SO_(2)` or `NO_(2)` into atmosphere.D. All |
| Answer» Correct Answer - 4 | |
| 78. |
Which one of the following oxides produces brown air of reddish brown haze?A. Oxides of sulphurB. Oxides of nitrogenC. Oxides of carbonD. All of these |
| Answer» Correct Answer - B | |
| 79. |
Non-viable particulates are :A. bacteriaB. fungiC. mouldsD. none of these |
| Answer» Correct Answer - D | |
| 80. |
The size of particulates of `H_2SO_4` fog lies in the rangeA. 5-100 nmB. 100-500 nmC. 500-1000 nmD. 1000-10,000 nm |
| Answer» Correct Answer - C | |
| 81. |
The aromatic compounds present as particulates areA. BenzeneB. TolueneC. NitrobenzeneD. Polycyclic hydrocarbons |
| Answer» Correct Answer - D | |
| 82. |
Which of the following forms a toxic substance in blood by combining with haemoglobin?A. Carbon dioxideB. Carbon monoxideC. OxygenD. Methane |
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Answer» Correct Answer - B Carbon monoxide forms a toxic substane carboxyhaemoglobin by combining withg haemoglobin of the blood |
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| 83. |
For the following equilibrium in which `CO` combines with haemoglobin of blood. `HbO_(2)+CO hArrHBCO+O_(2), DeltaG lt 0` Effect of this equilibrium isA. Oxygen-carrying capacity of haemoglobin is reducedB. oxygen-carrying capacity of haemoglobin is reducedC. Addition of `H_(2)O` makes `Delta G` more negativeD. temperature has no effect |
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Answer» Correct Answer - A When `CO` combines with haemoglobin `Delta G lt 0` i.e.,reaction is spontaneous (in forward side). More `O_(2)` is released. Thus `O_(2)` carrying capacity of haemoglobin is It does not involve `H_(2)O` hence no effect of addition of `H_(2)O` also, `Delta G = -2.303RT log K`. |
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| 84. |
The gas which reacts with haemoglobin in blood is :A. COB. `SO_(2)`C. `CO_(2)`D. NO |
| Answer» Correct Answer - A | |
| 85. |
Ultra violet light causesA. Fromation of pyrimidinesB. Sticky metaphasesC. Photodynamic actionD. Destruction of hydroen bonds between complementary DNA strands |
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Answer» Correct Answer - D Ultravioled light causes destruction of hydrogen bonds between complementary DNA strands |
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| 86. |
Which of the following helps in creating ozone over Antarctica?A. Radioactive cloudsB. Polar stratospheric cloudsC. Spring cloudsD. smoke clouds |
| Answer» Correct Answer - B | |
| 87. |
Ozone depleton due to the fomation of following compound in AntarcticaA. AcroleinB. PANC. PCBsD. Chlorine nitrate |
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Answer» Correct Answer - D `{:(Cloverset (.)O_((g)),+,NO_(2(g)),to,ClONO_(2(g))),(,,,,"Chlorine nitrate "):}` |
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| 88. |
Ozone depleton due to the fomation of following compound in AntarcticaA. accroleinB. peroxy acetyl nitrateC. `SO_(2) andSO_(3)`D. `chlorine nitrate |
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Answer» Correct Answer - D See ozone depletion |
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| 89. |
Permissible noise levels in a residential area at night time isA. 35 dbB. 40 dbC. 50 dbD. 45 db |
| Answer» Correct Answer - C | |
| 90. |
Exposure of an organism to UV system causesA. Photodynamic actionB. Formation of thymidineC. Splitting of H-bonds of DNAD. Splitting of phosphodiester bonds |
| Answer» Correct Answer - C | |
| 91. |
Assertion: In the stratosphere, ozone is produced by the action of `UV` radiations on dioxygen. Reason: `UV` radiations split the molecules oxygen into free oxygen (O) atoms which combine with molecular oxygen to form ozone.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true and the reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true. |
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Answer» Correct Answer - A `O_(2)(g) overset(UV)to O(g) +O(g), O(g) +O_(2)(g) overset(UV)hArrO_(3)(g)` |
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| 92. |
UV radiations bring aboutA. Skin cancerB. Mouth cancerC. Lung canerD. Liver cancer |
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Answer» Correct Answer - A U.V radiation brings about skin cancer. |
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| 93. |
Soil pollution can result in decreasedA. Soil producitivityB. Quality of plantsC. Purity of ground waterD. All of these |
| Answer» Correct Answer - D | |
| 94. |
Positive pollution of soil is due toA. Excessive use of fertilizersB. Addition of wastes on soilC. Reduction in soil productivityD. All of these |
| Answer» Correct Answer - D | |
| 95. |
Ozone day is observed onA. January 30B. `April 21`C. `September 16`D. `December 25` |
| Answer» Correct Answer - C | |
| 96. |
`SO_2` pollution affects which part of the plantA. ChloroplastB. MitochondriaC. ERD. Lysosome |
| Answer» Correct Answer - A | |
| 97. |
Which is the most `SO_2` polluted cityA. BombayB. CalcuttaC. DelhiD. Madras |
| Answer» Correct Answer - B | |
| 98. |
The loss of green colour in plants due to presence of even a very low concentration of `SO_2` is called ________ |
| Answer» Correct Answer - chlorosis | |
| 99. |
Non-biodergradable industrial waste that can be utilized by cement industry isA. Fly ashB. SlagC. GypsumD. Both 1 and 2 |
| Answer» Correct Answer - D | |
| 100. |
Which one of the following is a herbicide?A. OrganochlorinesB. OrganophosphatesC. CarbamatesD. Sodium arisinite |
| Answer» Correct Answer - D | |