Class 10 Chemistry MCQs – Practice Test 2 (Chapter 6)

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Environmental Chemistry I Atmosphere MCQ – Practice Test 2 PDF Download

MCQ 6: The outer layer of the thermosphere is:

ionosphere
exosphere
mesosphere
stratosphere

MCQ 7: Minimum temperature of the troposphere is:

17 °C
−55 °C
−5 °C
1800 °C

MCQ 8: The temperature of the outer mesosphere is:

93 °C
−93 °C
;5 °C
−5 °C

MCQ 9: If silk clothes are left in the open air for a week or so, their color fades because of:

sulphur dioxide is converted into sulphur trioxide
dirt
carbon monoxide
nitrogen oxides

MCQ 10: Height of thermosphere is:

50 Km
80 Km
above 80 Km
30 Km

Class 10 Chemistry Notes App & e-Book – Environmental Chemistry I Atmosphere Exam Prep

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