Air Pollution

Tested in 4 real MPSC questions across 3 years (2018–2023). See it in context on the interactive Concept Graph →

Years it was asked

2023 2019 2018

What you need to know first

Basic chemistry of air pollutantsSources of air pollution

Real questions that test this

PAN (पेरोक्सीअसेटाइल नायट्रेट) खालील परस्पर क्रियेच्या परिणामी तयार होतो. PAN (Peroxyacetyl nitrate) is formed as a result of following interaction :

1)नायट्रोजन ऑक्साइड आणि सल्फर डायऑक्साइड / Nitrogen oxide and sulfer dioxide

2)कार्बन मोनोऑक्साइड आणि अस्थिर सेंद्रिय संयुगे / Carbon monoxide and volatile organic compounds&check; Correct

3)नायट्रोजन ऑक्साइड आणि हायड्रोकार्बन्स / Nitrogen Oxide and hydrocarbons

4)ओझोन आणि कण / Ozone and particulate matter

PAN (Peroxyacetyl nitrate) is a secondary pollutant formed in the atmosphere through photochemical reactions involving hydrocarbons (volatile organic compounds) and nitrogen oxides in the presence of sunlight.

पर्जन्यस अम्ल पर्जन्य म्हणतात जेव्हा, pH चे मुल्य __________ असते. Rain is called acid rain, when its pH value is

a)(1) 7.0

b)(2) 8.3

c)(3) 7.9

d)(4) 5.6 पेक्षा कमी / Less than 5.6&check; Correct

Normal rain is slightly acidic due to dissolved CO2 with a pH of around 5.6. Rain with a pH value less than 5.6 is specifically termed acid rain.

भारतीय लोकांचे आरोग्य खालावण्यास खालीलपैकी कोणता महत्त्वाचा घटक कारणीभूत आहे.

1)हवेचे प्रदूषण

2)जल प्रदूषण&check; Correct

3)ध्वनी प्रदूषण

4)भूमी प्रदूषण

Water pollution is a major factor degrading public health in India due to widespread waterborne diseases and contamination of drinking sources.

Practice Environment interactively →