Important Questions Test: Pollution Of Air And Water
20 Questions MCQ Test Science Class 8 | Important Questions Test: Pollution Of Air And Water
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The Taj Mahal is being affected due to:
Highest percentage of air consists of:
Most polluted river in the world is:
Pollution is known to cause and exacerbate a number of chronic respiratory diseases. The World Health Organisation has placed air pollution as the world’s largest environmental health risk factor. There has been recent publicity about the role for diet and anti-oxidants in mitigating the effects of pollution, and this review assesses the evidence for alterations in diet, including vitamin supplementation in abrogating the effects of pollution on asthma and other chronic respiratory diseases.
Which of the following is not a greenhouse gas?
A greenhouse gas is a gas that produces heat in the atmosphere as it increases. It also gets stuck in the environment and can not leave the internal layer of the Earth’s atmosphere. These gases introduce pollution because they contaminate the environment.
Examples for greenhouse gases: Carbon dioxides, Methane, Chlorofluorocarbon, sulfur dioxide.
Whereas oxygen, nitrogen, and argon are not examples of greenhouse gases.
The percentage of nitrogen in air is
Ganga Action Plan was launched to reduce the pollution levels in the
Which of these are responsible for water pollution?
Chlorofluorocarbon is used in
D is the correct option.Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants and Air conditioners.
Ganga Action Plan aims to reduce cutting of trees.
Corrosion of marble is also known as marble cancer.
A is the correct option.The acids present in the acid rain react with the marble of monument and corrode it slowly. The slow corrosion (or eating up) of marble of a monument by acid rain is known as Marble cancer. ... These acids mix with rain and cause acid rain. This corrodes the marble of the monuments.
Global warming is a serious threat for life on earth.
Carbon monoxide is a green house gas.
Potable water is translucent.
because potable water is safe to drink and it is transparent.
Carbon monoxide reduces the oxygen, carrying capacity of the blood.
Acid rain corrodes the marble of monuments.
Acid rain does not affect the soil and plants.
Increasing levels of greenhouse gases like CO2 causes global warming.
Sun’s rays do not warm the earth’s surface.
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