Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
288 views
in GK by (114k points)
closed by

Photochemical smog is a resultant of the reaction among


1. NO2, O3 and peroxyacetyl nitrate in the presence of sunlight 
2. CO, O2 and peroxyacetyl nitrate in the presence of sunlight
3. CO, CO2 and NO2 at low temperature
4. high concentration of NO2, O3 and CO in the evening

1 Answer

0 votes
by (115k points)
selected by
 
Best answer
Correct Answer - Option 1 : NO2, O3 and peroxyacetyl nitrate in the presence of sunlight 

The correct answer is NO2, O3, and peroxyacetyl nitrate in the presence of sunlight.

  • Smog is a secondary pollutant, which has made up of Smoke and Fog.
  • Traditionally, the smog has resulted from large amounts of coal burning in an area caused by a mixture of smoke and sulfur dioxide.
  • Nowadays, the Vehicle emissions and Industrial emissions that are acted on in the atmosphere by ultraviolet light from the sun to form secondary pollutants that also combine with the primary emissions to form photochemical smog.
  • The major chemical pollutants in Photochemical smog are NO, NO2, volatile organic compounds, Ozone, and PAN Peroxyacetyl Nitrate.
    • NO2 decreases visibility due to yellowish colour.
  • Hence option 1 is correct.

​​ 

  • State of Global Air 2020 Report:
    • According to it, India faced the highest per capita pollution exposure (83.2 μg/cubic metres) in the world.
      • In 2019, over 116,000 infants in India died within a month after birth due to exposure to severe air pollution.
      • The report also suggests exposure to polluted air during pregnancy is linked to low weight and premature birth.
      • Further, it noted that long-term exposure to outdoor and household air pollution contributed to over 1.67 million annual deaths from stroke, heart attack, diabetes, lung cancer, chronic lung diseases, and neonatal diseases in India in 2019.
  • Pollutants Causing Effect on Health
    • Pollutants with the strongest evidence for public health concern include particulate matter (PM), Ozone (O3), Nitrogen dioxide (NO2) and Sulphur dioxide (SO2).
    • These pollutants are capable of penetrating deep into lung passageways and entering the bloodstream causing cardiovascular, cerebrovascular and respiratory impacts.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...