[email protected] | +91-98701-34447 | WhatsApp Channel

Join Our WhatsApp Channel for Exam Updates | Register now for Olympiad Exams | Check the Exam Dates | See the Marking Scheme | Frequently Asked Questions (FAQs)

Subjects
- UMO
  Unicus Mathematics Olympiad (UMO)
  
  Syllabus (Year 2027-28)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2027-28)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 13, 2027 / Jul 30, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UMO
  
  Olympiad Preparation
  
  FAQs
  USO
  Unicus Science Olympiad (USO)
  
  Syllabus (Year 2027-28)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2027-28)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 9, 2027 / Jul 24, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About USO
  
  Olympiad Preparation
  
  FAQs
  UEO
  Unicus English Olympiad (UEO)
  
  Syllabus (Year 2027-28)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2027-28)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 10, 2027 / Jul 22, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UEO
  
  Olympiad Preparation
  
  FAQs
  UGKO
  Unicus General Knowledge Olympiad (UGKO)
  
  Syllabus (Year 2027-28)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2027-28)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 6, 2027 / Jul 16, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGKO
  
  Olympiad Preparation
  
  FAQs
  UCTO
  Unicus Critical Thinking Olympiad (UCTO)
  
  Syllabus (Year 2027-28)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2027-28)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 7, 2027 / Jul 20, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UCTO
  
  Olympiad Preparation
  
  FAQs
  UGMO
  Unicus Global Mathematics Olympiad (UGMO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 16, 2027 / Jan 28, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGMO
  
  Olympiad Preparation
  
  FAQs
  UGSO
  Unicus Global Science Olympiad (UGSO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 14, 2027 / Jan 23, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGSO
  
  Olympiad Preparation
  
  FAQs
  UGEO
  Unicus Global English Olympiad (UGEO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 09, 2027 / Jan 20, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGEO
  
  Olympiad Preparation
  
  FAQs
  UAIO
  Unicus Artificial Intelligence Olympiad (UAIO)
  
  Syllabus (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 19, 2027 / Jan 30, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UAIO
  
  Olympiad Preparation
  
  FAQs
  UGXO
  Unicus Global Xtempore Olympiad (UGXO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 22, 2027 / Feb 3, 2027
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGXO
  
  Olympiad Preparation
  
  FAQs
Exam Details
Quizzes Free
CareerLab New
- Career Assessments
- Lifeskills Assessments
Contact Us
Free Trial
Login/Sign-Up

What Makes Air Dirty or Polluted?

Air can get dirty when harmful things mix into it.
These harmful things are called pollutants and can come from different places.
Polluted air can make it hard for us to breathe and can make us sick.
Cars, factories, and even trash burning can release harmful smoke and gases.

Examples:

Cars give off smoke and gases that pollute the air when they drive.
Factories may release dirty smoke into the air while making things.
Burning trash, like plastic, sends harmful gases into the air.

Fun Fact: Trees can help clean our air! They take in bad gases and give us fresh oxygen to breathe.

More Links

Subscribe for Unicus International Olympiad Exams

70%