Class 10 Chemistry MCQs – Practice Test 15 (Chapter 6)

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Environmental Chemistry I Atmosphere Quiz – Practice Test 15 PDF Download

MCQ 71: Sulphuric acid eats away metals to form:

water soluble salts only
hydrogen only
oxygen
water soluble salts and hydrogen

MCQ 72: Which of the following saves us from the harmful effects of incoming ultraviolet radiation from the sun?

troposphere
mesosphere
thermosphere
ozone

MCQ 73: Brilliant light displays called aurora borealis occur in:

troposphere
stratosphere
exosphere
ionosphere

MCQ 74: Which of the following contains the maximum amount of ozone?

troposphere
stratosphere
mesosphere
thermosphere

MCQ 75: Acid rain may have pH as low as:

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