Consider the following : I. Cigarette butts II. Eyeglass lenses III. Car tyres How many of them contain plastic?
- (a)Only one
- (b)Only two
- (c)All the three
- (d)None
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Official answer(c) All the three
Pollution
3 questions in Environment & Ecology.
Asked in 2025, 2020, 2017
Which of the following are the reasons/factors for exposure to benzene pollution ? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished wooden furniture 5. Using products made of polyurethane Select the correct answer using the code given below :
- (a)1, 2 and 3 only
- (b)2 and 4 only
- (c)1, 3 and 4 only
- (d)1, 2, 3, 4 and 5
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Official answer(a) 1, 2 and 3 only
Biological Oxygen Demand (BOD) is a standard criterion for
- (a)Measuring oxygen levels in blood
- (b)Computing oxygen levels in forest ecosystems
- (c)Pollution assay in aquatic ecosystems
- (d)Assessing oxygen levels in high altitude regions
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Official answer(c) Pollution assay in aquatic ecosystems