Class 10 Chemistry MCQs – Practice Test 9 (Chapter 6)

Environmental Chemistry I Atmosphere MCQs with Answers PDF Download – Test 9

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Environmental Chemistry I Atmosphere MCQs – Practice Test 9 PDF Download

MCQ 41: Majority of the UV rays are screened out by:

oxygen
nitrogen
ozone
carbon

MCQ 42: Most of the dust particles and water vapors are present in:

troposphere
stratosphere
mesosphere
thermosphere

MCQ 43: Which of the following comes mainly due to the combustion of fuel used in motor vehicles?

chlorofluorocarbons (CFCs)
methane
carbon monoxide
lead compounds

MCQ 44: Which of the following causes headache and dizziness and can even cause death if inhaled for a long time?

sulphur dioxide
carbon dioxide
nitrogen dioxide
carbon monoxide

MCQ 45: Anything that destroys some part of the environment is called:

dirt
virus
pollutant
bacteria

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