Environmental Pollution Learning App | Class 10 Chemistry Quiz e-Book PDF

Class 10 Chemistry MCQs (Grade 10) From Textbook

Class 10 Chemistry MCQs – Certification Test 80

Environmental Pollution Quiz (Question 80) – App & e-Book Download

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MCQ 80: What is the source of lead compounds?

  1. aerosol sprays foams
  2. exhaust fumes of motor vehicles
  3. incomplete burning of wood
  4. none of above

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