The entire fleet of buses in Delhi was converted to CNG from diesel. In reference to this, which one of the following statements is false?

1. It cannot be adulterated like diesel.
2. CNG burns more efficiently than diesel.
3. The same diesel engine is used in CNG buses making the cost of conversion low.
4. It is cheaper than diesel.



 

Subtopic:  Air Pollution |
 73%
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Given below are two statements:

Statement I: In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II: Particulate matter (PM 2.5) cannot be removed by scrubber but can be removed by an electrostatic precipitator.

In the light of the above statements, choose the most appropriate answer from the options given below:
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:  Air Pollution |
From NCERT
NEET - 2022
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High dose of UV-B causes inflammation of cornea and is called as: 
1. UV -blindness 
2. Colour-blindness 
3. Evening- blindness 
4. Snow- blindness 

Subtopic:  Ozone Layer Depletion |
 84%
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The thickness of the ozone in a column of air from the ground to the top of the atmosphere is measured in terms of : 
1. Dalton units 
2. Svedberg units 
3. Monomeric units 
4. Dobson units 

Subtopic:  Ozone Layer Depletion |
 90%
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:  Water Pollution |
 70%
From NCERT
NEET - 2022
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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
Subtopic:  Air Pollution |
 77%
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NEET - 2022
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The device which can remove particulate matter present in the exhaust from a thermal power plant is : 
1. Catalytic Convertor
2. STP
3. Incinerator
4. Electrostatic Precipitator

Subtopic:  Air Pollution |
 82%
From NCERT
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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:  Ozone Layer Depletion |
 81%
From NCERT
NEET - 2023
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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:  Water Pollution |
 65%
From NCERT
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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:  Air Pollution |
From NCERT
NEET - 2023
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