• AglaSem
  • Schools
  • Admission
  • Career
  • News
  • Hindi
  • Mock Test
  • Docs
  • ATSE
aglasem
  • CBSE
    • Date Sheet
    • Syllabus
    • Sample Papers
    • Question Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Admit Card
    • Result
    • Sample Paper
    • Question Paper
  • NCERT
    • NCERT Books
    • NCERT Solutions
    • NCERT Exempler
    • Teaching Material
  • Mock Tests
  • Study Material
    • Notes
    • Solved Sample Papers
    • Maps
    • Writing Skill Format
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • RD Sharma Solutions
    • HC Verma Solutions
    • Teaching Material
    • Classes Wise Resources
    • Videos
No Result
View All Result
aglasem
  • CBSE
    • Date Sheet
    • Syllabus
    • Sample Papers
    • Question Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Admit Card
    • Result
    • Sample Paper
    • Question Paper
  • NCERT
    • NCERT Books
    • NCERT Solutions
    • NCERT Exempler
    • Teaching Material
  • Mock Tests
  • Study Material
    • Notes
    • Solved Sample Papers
    • Maps
    • Writing Skill Format
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • RD Sharma Solutions
    • HC Verma Solutions
    • Teaching Material
    • Classes Wise Resources
    • Videos
No Result
View All Result
aglasem
No Result
View All Result

CBSE Class 12 Chemistry Notes: Enviromental Chemistry – Particulates

by Neepur Garg
April 22, 2019
in Extras
Reading Time: 2 mins read
0

Particulates refer to finely divided solid or liquid particles suspended in air. The particulates, usually present in atmosphere are soot, water particles, metal oxides & metal salts, fly ash, asbestos powder, dust, solid hydrocarbons etc. Liquid aerosols include sulphuric acid & nitric acid mists.

Some common particulates & their sources

(i) Soot          

The most common particulate injected into the atmosphere through human activity is soot which is produced by incomplete combustion of carbonaceous fossils fuels such as coal, fuel oil, natural gas, wood etc in insufficient supply of oxygen.

(ii) Metal particles       

These are released by various metal finishing operation. The micro particles of toxic metal & SO2 gas present in the polluted atmosphere get absorbed on the particles rendering them highly toxic.

(iii) Metal oxides

They are generated by combustion of fuels containing metallic compounds.

(iv) Lead salts

Their source is lead tetraethyl (Pb(C2H5)4) which is added to gasoline to improve its antiknock property. In order to avoid deposition of PbO suitable amounts of C2H4Cl2 & C2H4Br2 are added to gasoline along with Pb(C2H5)4.

(v) Fly ash

It originates from the combustion of high ash fossil. It contains partially burnt particles of the fuels.

(vi) Asbestos dust

It originates from industrial units manufacturing asbestos sheets, gaskets ropes etc. Asbestos flowing & asbestos insulations also contribute towards asbestos dust in the atmosphere.

(vii) Solid Hydrocarbons

These are emitted from petroleum refineries & comprise of paraffins, olefins & aromatics.

(viii) Dust Particulates

Dust particulates originate from natural, domestic, industrial or agricultural sources. These are thrown into atmosphere by volcanic eruptions, blowing of dust by wind, mining operations etc.

(ix) Acid mist  

Sulphuric acid mist is produced when SO3 present in the atmosphere comes in contact with moisture. Similarly nitric acid mist is produced when oxides of nitrogen, viz, NO & NO2, undergo the series of reactions in the atmosphere.

« Click Here for Previous Topic Click Here for Next Topic »

Class 12 Enviromental Chemistry All Topic Notes Class 12 Chemistry All Chapters Notes

To get fastest exam alerts and government job alerts in India, join our Telegram channel.

Tags: Class 12th

Neepur Garg

Related Posts

Extras

JEE NEET Chemistry Question Bank for Biomolecules

Extras

JEE NEET Chemistry Question Bank for Hydrocarbons

Extras

JEE NEET Chemistry Question Bank for Polymers

Extras

JEE NEET Question Bank Chemistry – Revision, MCQ Question & Solutions

Next Post

CBSE Class 12 Chemistry Notes: Enviromental Chemistry - Major Air Pollutants

Discussion about this post

Registration Open!!

  • ATSE 2022, Olympiad Registration Open.
  • Rungta Institute Admission 2022 Open
  • REVA University Admission 2022 Open
  • AEEE 2020 - Amrita Vishwa Vidyapeetham

Term 2 Solved Sample Paper 2022

  • Class 8 Sample Paper Term 2
  • Class 9 Sample Paper Term 2
  • Class 10 Sample Paper Term 2
  • Class 11 Sample Paper Term 2
  • Class 12 Sample Paper Term 2

CBSE Board Quick Links

  • CBSE Date Sheet
  • CBSE Result
  • CBSE Syllabus
  • CBSE Sample Papers
  • CBSE Question Papers
  • CBSE Notes
  • CBSE Practice Papers
  • CBSE Mock Tests

Class Wise Study Material

  • Class 1
  • Class 2
  • Class 3
  • Class 4
  • Class 5
  • Class 6
  • Class 7
  • Class 8
  • Class 9
  • Class 10
  • Class 11
  • Class 12

For 2022

  • Solved Sample Papers
  • Maps
  • Revision Notes
  • CBSE
  • State Board

Study Material

  • Class Notes
  • NCERT Solutions
  • NCERT Books
  • HC Verma Solutions
  • Courses After Class 12th

Exam Zone

  • JEE Main 2022
  • NEET 2022
  • CLAT 2022
  • Fashion & Design
  • Latest
  • Disclaimer
  • Terms of Use
  • Privacy Policy
  • Contact

© 2019 aglasem.com

No Result
View All Result
  • CBSE
  • ICSE / ISC
  • State Board
  • NCERT
  • Mock Test
  • Study Material
  • Olympiads
  • Schools Admission
  • Entrance Exams
  • Student Guide
  • HC Verma Solutions
  • Videos

© 2019 aglasem.com

UPES Admission 2022 Open Apply Now!!