Class 10 Chemistry MCQs – Practice Test 17 (Chapter 6)

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Environmental Chemistry I Atmosphere MCQs – Practice Test 17 PDF Download

MCQ 81: What happens to the rates of ozone formation and destruction in the absence of outside intervention?

rate of ozone formation is faster
rate of ozone destruction is faster
they are equal
none of above

MCQ 82: Amount of ozone contained by stratosphere is:

10ppm
20ppm
30ppm
40ppm

MCQ 83: Which of the following is a poisonous gas?

carbon dioxide
carbon monoxide
nitrogen
nitrogen dioxide

MCQ 84: What is the source of sulfur dioxide?

Powerstations and industries using fossil fuels
exhaust fumes of motor vehicles
incomplete burning of wood
none of above

MCQ 85: The thermosphere is hot up to:

1800 °C
800 °C
1000 °C
50 °C

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