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Class 10 Chemistry MCQs – Certification Test 155

Air Pollution MCQ (Question 155) – App & e-Book Download

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MCQ: 155

If silk clothes are left in the open air for a week or so, their color fades because of

  1. sulphur dioxide is converted into sulphur trioxide
  2. dirt
  3. carbon monoxide
  4. nitrogen oxides

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