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Presence of undesirable solid or gaseous particles in the air promotes:
  • a)
    Tropospheric pollution
  • b)
    Statospheric pollution
  • c)
    Ozone depletion
  • d)
    Sulphur pollution
Correct answer is option 'A'. Can you explain this answer?
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Presence of undesirable solid or gaseous particles in the air promotes...
Tropospheric pollution occurs due to the presence of undesirable solid or gaseous particles in the air.
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Presence of undesirable solid or gaseous particles in the air promotes...
Troposphere is the lower layer of atmosphere. Its thickness is about the range of 0-12 km. In this layer, all types of pollutants are present i.e. gaseous pollutants and particulate pollutants.
Gaseous pollutants consists SO₂, NO₂, CO₂, etc. Particulate pollutants consists smog, dust, fumes.
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Presence of undesirable solid or gaseous particles in the air promotes...
Presence of Undesirable Particles in Air and Tropospheric Pollution

Introduction:
Air pollution is the presence of harmful substances in the air we breathe. These substances can be in the form of solid or gaseous particles. The presence of these particles in the air can have serious consequences for our health and the environment.

Undesirable Particles in Air:
Undesirable particles in the air can include a wide range of substances such as dust, smoke, pollen, and chemicals. These particles can come from a variety of sources including factories, cars, and natural sources such as wildfires.

Tropospheric Pollution:
When these undesirable particles are present in the lower atmosphere, known as the troposphere, they can cause a variety of problems collectively known as tropospheric pollution. This type of pollution can have a range of effects including:

- Health problems such as respiratory issues and heart disease
- Reduced visibility due to smog and haze
- Damage to crops and other plants
- Acid rain caused by the reaction of pollutants with water in the atmosphere

Conclusion:
In conclusion, the presence of undesirable solid or gaseous particles in the air can have serious consequences for our health and the environment. This type of pollution is known as tropospheric pollution and can have a range of effects including respiratory issues and reduced visibility. It is important that we take steps to reduce our impact on the environment and reduce the amount of pollutants we release into the air.
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Direction:Read the following passage carefully:Delhi tried very hard, but it was not enough. In the run up to D-Day, the sound of firecrackers had not been heard. The Supreme Court’s ban on its sale had made it difficult to acquire, but many people, including schoolchildren, had decided to break tradition for clean air. And until 7 pm on Diwali, most neighborhoods were quiet. Around that time the first sound of firecrackers exploding was heard, slowly building to a crescendo. But it was nowhere near the blitzkrieg of the past, not even half of it. And long before midnight, it was all over.The bad news broke at dawn. It was a visibly smoggy morning. Air pollution levels peaked on Diwali night and remained dangerously high through Friday afternoon, as reflected in real-time monitoring data from the Central Pollution Control Board (CPCB) and the Delhi Pollution Control Committee (DPCC).The CPCB, however, pointed to a silver lining. He said this year’s Air Quality Index (AQI) was better than Diwali’s in the past two years despite the harsh weather conditions. At Diwali last year (October 30, 2016), the city’s average AQI was in the “serious” category at 426, while the year before (November 11, 2015), it had been in the “very poor” category. ” at 327. This time, it was marginally lower at 326.There are so many factors that affect air quality, from wind speed and direction to crop stubble burning in neighboring states, that it’s hard to definitively identify the main culprit. What must be recognized, however, is that at least most people are willing to stick with what may seem like unpleasant decisions for a better quality of life.However, the data is troubling informed observers, particularly the massive spikes in levels of PM 2.5 (respirable fine particulate matter pollutants) and PM 10 (coarse particulate matter pollutants) on Thursday night after 10 p.m. p.m. Delhi peaked at 656 micrograms per cubic meter around midnight.However, the data also shows that despite unfavorable weather conditions, the air quality at Diwali this year was better than last year. It hadn’t been as good in the two days before Diwali due to the intrusion of humid air from the southeast, coupled with prevailing calm wind conditions. The average mixing height (the height at which smoke or air rises, mixes and disperses) recorded on October 18 and 19 was 547 meters and 481 meters, respectively, according to the CPCB. It must be at least 1000 meters for a correct dispersion.Q.The ‘bad news’ that broke at dawn was that

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Presence of undesirable solid or gaseous particles in the air promotes:a)Tropospheric pollutionb)Statospheric pollutionc)Ozone depletiond)Sulphur pollutionCorrect answer is option 'A'. Can you explain this answer?
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