Take 5 chapter-wise practice tests of 25 questions each on Environmental Chemistry for NEET with +4/-1 scoring, answer review, and concise explanations.
5 original practice tests, 25 questions each, NEET 4/-1 marking, and answer review after submission.
Top banner before test cards for Environmental Chemistry.
1. A pollutant is a substance that:
Explanation: Pollutants disturb environmental balance.
2. Carbon monoxide is dangerous mainly because it:
Explanation: It reduces oxygen transport in blood.
3. Acid rain is mainly caused by oxides of:
Explanation: SO$_x$ and NO$_x$ form acids in atmosphere.
4. The main greenhouse gases include CO$_2$, CH$_4$, and:
Explanation: Several gases trap infrared radiation.
5. The ozone layer protects life by absorbing:
Explanation: Stratospheric ozone filters UV.
6. Chlorofluorocarbons damage ozone layer by releasing:
Explanation: These catalytically destroy ozone.
7. Photochemical smog forms in presence of sunlight and pollutants like:
Explanation: Sunlight drives secondary pollutant formation.
8. High BOD of water indicates:
Explanation: Microbes consume more oxygen to decompose wastes.
9. A healthy aquatic system generally requires relatively high:
Explanation: Aquatic life depends on available oxygen.
10. Excess nitrates and phosphates in water often lead to:
Explanation: Nutrient enrichment causes algal bloom.
11. Excess use of non-biodegradable pesticides is problematic because they:
Explanation: They remain in food chains for long periods.
12. A biodegradable pollutant is one that can be decomposed by:
Explanation: These pollutants break down naturally.
13. A classic non-biodegradable pollutant often cited in school chemistry is:
Explanation: It persists in ecosystems.
14. Suspended solid or liquid particles in air are called:
Explanation: PM causes respiratory and visibility issues.
15. Ozone in lower atmosphere is considered:
Explanation: Ground-level ozone irritates living tissues.
16. Catalytic converters in vehicles help reduce:
Explanation: They convert harmful gases to less harmful products.
17. Unwanted sound causing discomfort is called:
Explanation: It affects health and comfort.
18. Thermal pollution often refers to discharge of:
Explanation: It lowers dissolved oxygen and harms aquatic life.
19. A primary pollutant is one that is:
Explanation: Secondary pollutants form after atmospheric reactions.
20. PAN in photochemical smog is a:
Explanation: It forms through atmospheric reactions.
21. A fast way to score this chapter is to sort each issue into air, water, soil, or:
Explanation: This chapter is classification-heavy.
22. The most asked NEET environmental topics are acid rain, ozone depletion, BOD, eutrophication, and:
Explanation: These are the highest-yield repeats.
23. Reducing sulfur content in fuels helps decrease:
Explanation: Less sulfur means less SO$_2$ emission.
24. Biomagnification means progressive increase of pollutant concentration along:
Explanation: Top consumers accumulate the most persistent pollutants.
25. CFC stands for:
Explanation: These compounds are linked with ozone depletion.
26. A pollutant is a substance that:
Explanation: Pollutants disturb environmental balance.
27. Carbon monoxide is dangerous mainly because it:
Explanation: It reduces oxygen transport in blood.
28. Acid rain is mainly caused by oxides of:
Explanation: SO$_x$ and NO$_x$ form acids in atmosphere.
29. The main greenhouse gases include CO$_2$, CH$_4$, and:
Explanation: Several gases trap infrared radiation.
30. The ozone layer protects life by absorbing:
Explanation: Stratospheric ozone filters UV.
31. Chlorofluorocarbons damage ozone layer by releasing:
Explanation: These catalytically destroy ozone.
32. Photochemical smog forms in presence of sunlight and pollutants like:
Explanation: Sunlight drives secondary pollutant formation.
33. High BOD of water indicates:
Explanation: Microbes consume more oxygen to decompose wastes.
34. A healthy aquatic system generally requires relatively high:
Explanation: Aquatic life depends on available oxygen.
35. Excess nitrates and phosphates in water often lead to:
Explanation: Nutrient enrichment causes algal bloom.
36. Excess use of non-biodegradable pesticides is problematic because they:
Explanation: They remain in food chains for long periods.
37. A biodegradable pollutant is one that can be decomposed by:
Explanation: These pollutants break down naturally.
38. A classic non-biodegradable pollutant often cited in school chemistry is:
Explanation: It persists in ecosystems.
39. Suspended solid or liquid particles in air are called:
Explanation: PM causes respiratory and visibility issues.
40. Ozone in lower atmosphere is considered:
Explanation: Ground-level ozone irritates living tissues.
41. Catalytic converters in vehicles help reduce:
Explanation: They convert harmful gases to less harmful products.
42. Unwanted sound causing discomfort is called:
Explanation: It affects health and comfort.
43. Thermal pollution often refers to discharge of:
Explanation: It lowers dissolved oxygen and harms aquatic life.
44. A primary pollutant is one that is:
Explanation: Secondary pollutants form after atmospheric reactions.
45. PAN in photochemical smog is a:
Explanation: It forms through atmospheric reactions.
46. A fast way to score this chapter is to sort each issue into air, water, soil, or:
Explanation: This chapter is classification-heavy.
47. The most asked NEET environmental topics are acid rain, ozone depletion, BOD, eutrophication, and:
Explanation: These are the highest-yield repeats.
48. Reducing sulfur content in fuels helps decrease:
Explanation: Less sulfur means less SO$_2$ emission.
49. Biomagnification means progressive increase of pollutant concentration along:
Explanation: Top consumers accumulate the most persistent pollutants.
50. CFC stands for:
Explanation: These compounds are linked with ozone depletion.
51. A pollutant is a substance that:
Explanation: Pollutants disturb environmental balance.
52. Carbon monoxide is dangerous mainly because it:
Explanation: It reduces oxygen transport in blood.
53. Acid rain is mainly caused by oxides of:
Explanation: SO$_x$ and NO$_x$ form acids in atmosphere.
54. The main greenhouse gases include CO$_2$, CH$_4$, and:
Explanation: Several gases trap infrared radiation.
55. The ozone layer protects life by absorbing:
Explanation: Stratospheric ozone filters UV.
56. Chlorofluorocarbons damage ozone layer by releasing:
Explanation: These catalytically destroy ozone.
57. Photochemical smog forms in presence of sunlight and pollutants like:
Explanation: Sunlight drives secondary pollutant formation.
58. High BOD of water indicates:
Explanation: Microbes consume more oxygen to decompose wastes.
59. A healthy aquatic system generally requires relatively high:
Explanation: Aquatic life depends on available oxygen.
60. Excess nitrates and phosphates in water often lead to:
Explanation: Nutrient enrichment causes algal bloom.
61. Excess use of non-biodegradable pesticides is problematic because they:
Explanation: They remain in food chains for long periods.
62. A biodegradable pollutant is one that can be decomposed by:
Explanation: These pollutants break down naturally.
63. A classic non-biodegradable pollutant often cited in school chemistry is:
Explanation: It persists in ecosystems.
64. Suspended solid or liquid particles in air are called:
Explanation: PM causes respiratory and visibility issues.
65. Ozone in lower atmosphere is considered:
Explanation: Ground-level ozone irritates living tissues.
66. Catalytic converters in vehicles help reduce:
Explanation: They convert harmful gases to less harmful products.
67. Unwanted sound causing discomfort is called:
Explanation: It affects health and comfort.
68. Thermal pollution often refers to discharge of:
Explanation: It lowers dissolved oxygen and harms aquatic life.
69. A primary pollutant is one that is:
Explanation: Secondary pollutants form after atmospheric reactions.
70. PAN in photochemical smog is a:
Explanation: It forms through atmospheric reactions.
71. A fast way to score this chapter is to sort each issue into air, water, soil, or:
Explanation: This chapter is classification-heavy.
72. The most asked NEET environmental topics are acid rain, ozone depletion, BOD, eutrophication, and:
Explanation: These are the highest-yield repeats.
73. Reducing sulfur content in fuels helps decrease:
Explanation: Less sulfur means less SO$_2$ emission.
74. Biomagnification means progressive increase of pollutant concentration along:
Explanation: Top consumers accumulate the most persistent pollutants.
75. CFC stands for:
Explanation: These compounds are linked with ozone depletion.
76. A pollutant is a substance that:
Explanation: Pollutants disturb environmental balance.
77. Carbon monoxide is dangerous mainly because it:
Explanation: It reduces oxygen transport in blood.
78. Acid rain is mainly caused by oxides of:
Explanation: SO$_x$ and NO$_x$ form acids in atmosphere.
79. The main greenhouse gases include CO$_2$, CH$_4$, and:
Explanation: Several gases trap infrared radiation.
80. The ozone layer protects life by absorbing:
Explanation: Stratospheric ozone filters UV.
81. Chlorofluorocarbons damage ozone layer by releasing:
Explanation: These catalytically destroy ozone.
82. Photochemical smog forms in presence of sunlight and pollutants like:
Explanation: Sunlight drives secondary pollutant formation.
83. High BOD of water indicates:
Explanation: Microbes consume more oxygen to decompose wastes.
84. A healthy aquatic system generally requires relatively high:
Explanation: Aquatic life depends on available oxygen.
85. Excess nitrates and phosphates in water often lead to:
Explanation: Nutrient enrichment causes algal bloom.
86. Excess use of non-biodegradable pesticides is problematic because they:
Explanation: They remain in food chains for long periods.
87. A biodegradable pollutant is one that can be decomposed by:
Explanation: These pollutants break down naturally.
88. A classic non-biodegradable pollutant often cited in school chemistry is:
Explanation: It persists in ecosystems.
89. Suspended solid or liquid particles in air are called:
Explanation: PM causes respiratory and visibility issues.
90. Ozone in lower atmosphere is considered:
Explanation: Ground-level ozone irritates living tissues.
91. Catalytic converters in vehicles help reduce:
Explanation: They convert harmful gases to less harmful products.
92. Unwanted sound causing discomfort is called:
Explanation: It affects health and comfort.
93. Thermal pollution often refers to discharge of:
Explanation: It lowers dissolved oxygen and harms aquatic life.
94. A primary pollutant is one that is:
Explanation: Secondary pollutants form after atmospheric reactions.
95. PAN in photochemical smog is a:
Explanation: It forms through atmospheric reactions.
96. A fast way to score this chapter is to sort each issue into air, water, soil, or:
Explanation: This chapter is classification-heavy.
97. The most asked NEET environmental topics are acid rain, ozone depletion, BOD, eutrophication, and:
Explanation: These are the highest-yield repeats.
98. Reducing sulfur content in fuels helps decrease:
Explanation: Less sulfur means less SO$_2$ emission.
99. Biomagnification means progressive increase of pollutant concentration along:
Explanation: Top consumers accumulate the most persistent pollutants.
100. CFC stands for:
Explanation: These compounds are linked with ozone depletion.
101. A pollutant is a substance that:
Explanation: Pollutants disturb environmental balance.
102. Carbon monoxide is dangerous mainly because it:
Explanation: It reduces oxygen transport in blood.
103. Acid rain is mainly caused by oxides of:
Explanation: SO$_x$ and NO$_x$ form acids in atmosphere.
104. The main greenhouse gases include CO$_2$, CH$_4$, and:
Explanation: Several gases trap infrared radiation.
105. The ozone layer protects life by absorbing:
Explanation: Stratospheric ozone filters UV.
106. Chlorofluorocarbons damage ozone layer by releasing:
Explanation: These catalytically destroy ozone.
107. Photochemical smog forms in presence of sunlight and pollutants like:
Explanation: Sunlight drives secondary pollutant formation.
108. High BOD of water indicates:
Explanation: Microbes consume more oxygen to decompose wastes.
109. A healthy aquatic system generally requires relatively high:
Explanation: Aquatic life depends on available oxygen.
110. Excess nitrates and phosphates in water often lead to:
Explanation: Nutrient enrichment causes algal bloom.
111. Excess use of non-biodegradable pesticides is problematic because they:
Explanation: They remain in food chains for long periods.
112. A biodegradable pollutant is one that can be decomposed by:
Explanation: These pollutants break down naturally.
113. A classic non-biodegradable pollutant often cited in school chemistry is:
Explanation: It persists in ecosystems.
114. Suspended solid or liquid particles in air are called:
Explanation: PM causes respiratory and visibility issues.
115. Ozone in lower atmosphere is considered:
Explanation: Ground-level ozone irritates living tissues.
116. Catalytic converters in vehicles help reduce:
Explanation: They convert harmful gases to less harmful products.
117. Unwanted sound causing discomfort is called:
Explanation: It affects health and comfort.
118. Thermal pollution often refers to discharge of:
Explanation: It lowers dissolved oxygen and harms aquatic life.
119. A primary pollutant is one that is:
Explanation: Secondary pollutants form after atmospheric reactions.
120. PAN in photochemical smog is a:
Explanation: It forms through atmospheric reactions.
121. A fast way to score this chapter is to sort each issue into air, water, soil, or:
Explanation: This chapter is classification-heavy.
122. The most asked NEET environmental topics are acid rain, ozone depletion, BOD, eutrophication, and:
Explanation: These are the highest-yield repeats.
123. Reducing sulfur content in fuels helps decrease:
Explanation: Less sulfur means less SO$_2$ emission.
124. Biomagnification means progressive increase of pollutant concentration along:
Explanation: Top consumers accumulate the most persistent pollutants.
125. CFC stands for:
Explanation: These compounds are linked with ozone depletion.