Class 10 Chemistry MCQs - Chapter 6
Environmental Chemistry I Atmosphere Quiz Questions & Answers PDF Download - 3
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The Quiz: Percentage of hydrogen in the air is; "Environmental Chemistry I Atmosphere" App (iOS, Android) with answers: 0.8; 0.99; 0.5; 0.25; to study online courses. Study Composition of Atmosphere MCQ Questions, download Amazon eBook (Free Sample) for online education.
Environmental Chemistry I Atmosphere Exam Questions and Answers PDF Download: Test 3
Percentage of hydrogen in the air is
- 0.99
- 0.8
- 0.5
- 0.25
Which of the following have an impact on brain development in human beings especially among children?
- chlorofluorocarbons (CFCs)
- methane
- carbon monoxide
- lead compounds
Which of the following is true about ozone?
- light blue in colour
- odourless
- not harmful
- not a pollutant
Which of the following is a powerful irritant which can aggravate the symptoms of people who suffer from respiratory disorders?
- sulphur dioxide
- carbon monoxide
- carbon dioxide
- oxides of nitrogen
What is meant by the term 'meso'?
- top
- middle
- turning
- changing
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