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Q. No.Which one of the following statements is NOT correct?
1.
The amount of some toxic substances of industrial wastewater increases in the organisms at successive trophic levels.
2.
The micro-organisms involved in biodegradation of organic matter in a sewage-polluted water body consume aquatic organisms.
3.
Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries.
4.
Water hyacinth grows abundantly in eutrophic water bodies and lead to an imbalance in the ecosystem dynamics of the water body.
Subtopic: Â Water Pollution |
 66%
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NEET - 2023
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Given below are two statements:
| I: | Electrostatic precipitator is most widely used in thermal power plant. |
| II: | Electrostatic precipitator in thermal power plant removes ionising radiations |
| 1. | Statement I is incorrect but Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct but Statement II is incorrect. |
Subtopic: Â Air Pollution |
From NCERT
NEET - 2023
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Which of the following statements is correct?
| 1. | Algal Bloom decreases fish mortality. |
| 2. | Eutrophication refers to increase in domestic sewage and waste water in lakes. |
| 3. | Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. |
| 4. | Presence of large amounts of nutrients in water restricts 'Algal Bloom'. |
Subtopic: Â Water Pollution |
 63%
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NEET - 2023
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Nitrates and phosphates flowing from agricultural farms into water bodies are a significant cause of:
| 1. | Eutrophication | 2. | Humification |
| 3. | Mineralisation | 4. | Stratification |
Subtopic: Â Water Pollution |
 69%
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NEET - 2023
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What will happen if fresh water lake gets contaminated by the addition of polluted water with high BOD?
| 1. | Amount of dissolved oxygen in the lake will decrease. |
| 2. | The lake will remain unaffected |
| 3. | Number of submerged aquatic plants in the lake will increase |
| 4. | Number of aquatic animals in the lake will increase. |
Subtopic: Â Water Pollution |
 84%
From NCERT
NEET - 2023
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Match List - I with List - II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Deforestation | (I) | Responsible for heating of Earth's surface and atmosphere |
| (B) | Reforesation | (II) | Conversion of forested areas to non-forested areas |
| (C) | Green-house effect | (III) | Natural ageing of lake by nutrient enrichment of its water |
| (D) | Eutrophication | (IV) | Process of restoring a forest that once existed but was removed |
| Options: | (A) | (B) | (C) | (D) |
| 1. | IV | III | II | I |
| 2. | I | II | III | IV |
| 3. | III | I | II | IV |
| 4. | II | IV | I | III |
Subtopic: Â Green House Effect & Global Warming |Â Resource Utilisation & Maintenance |Â Water Pollution |
 85%
From NCERT
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Select the correct statements regarding dissolved Oxygen and Biochemical Oxygen demand.
Choose the most appropriate answer from the options given below:
| A: | BOD is inversely related to dissolved oxygen |
| B: | Low dissolved oxygen and high BOD lead to loss of aquatic life. |
| C: | High BOD leads to high dissolved oxygen |
| D: | Both BOD and dissolved oxygen are indicator of health of a water body |
| E: | Both BOD and dissolved oxygen are affected by amount of organic matter in the water body. |
| 1. | (A), (B), (C), (E) only | 2. | (A), (B), (D), (E) only |
| 3. | (A), (B), (C), (D) only | 4. | (B), (C), (D), (E) only |
Subtopic: Â Water Pollution |
 75%
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NEET - 2023
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The thickness of ozone in a column of air in the atmosphere is measured in terms of :
| 1. | Kilobase | 2. | Dobson unit |
| 3. | Decibels | 4. | Decameter |
Subtopic: Â Ozone Layer Depletion |
 81%
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Why CNG is considered better fuel than diesel?
a. It cannot be adulterated
b. It takes less time to fill the fuel tank
c. It burns more efficiently
d. It is cheaper
e. It is less inflammable.
Choose the most appropriate answer from the options given below:
1. (a), (b), (c), (e) only
2. (a), (c), (d) only
3. (a), (b), (d), (e) only
4. (c), (d), (e) only
a. It cannot be adulterated
b. It takes less time to fill the fuel tank
c. It burns more efficiently
d. It is cheaper
e. It is less inflammable.
Choose the most appropriate answer from the options given below:
1. (a), (b), (c), (e) only
2. (a), (c), (d) only
3. (a), (b), (d), (e) only
4. (c), (d), (e) only
Subtopic: Â Air Pollution |
 76%
From NCERT
NEET - 2022
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Which biological process leads to a decrease in the fish-eating bird population near a water body containing toxicants from industrial drainage?
1. Algal bloom
2. Biochemical oxygen demand
3. Accelerated Eutrophication
4. Biomagnification
Subtopic: Â Water Pollution |
 70%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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