Environmental Issues

ENVIRONMENTAL ISSUES 1

These MCQs are intended for checking your Biology, Chapter ENVIRONMENTAL ISSUES knowledge.

Which method is used to control pollutants of particulate nature?

As the organic waste input in a water body increases.

The Earth Summit, 1992, was held at

The phenomenon by which certain pollutants (e.g. DDT) accumulate in body tissue in increasing concentration is
called

In an aquatic food chain polluted by DDT, the tissue concentration of DDT would be highest in

Algal bloom is caused by

The process of nutrient enrichment of water is called as_________

In treatment of waste water, biological treatment is-

When and where the Ozone hole was discovered?

The effect of today’s radioactive fall out will be harmful to children of future generation than to children of present
because

Which statement is false?

Which of the following is a natural pollution?

_______ is the first step of sewage treatment.

In india, Jhum cultivation is practiced mainly in

_______ are used in electrostatics precipitators.

DDT-
(i) Is a non-degradable pollutant
(ii) shows biomagnification
(iii) is harmful to fishes and birds
(iv) is a pesticide

Thickness of ozone is measured in

DDT Causes-

Due to eutrophication____.

Biological oxygen demand of ______is the least.

What are the organisms that can tolerate high degrees of pollution called as?

Which of the following is/are correct regarding Montreal Protocol?
(i) Persistent organic pollutants
(ii) Global warming and climate change
(iii) To control the emission of ozone depleting substances
(iv) Biosafety of genetically modified organisms.

Which is a non-degradable pollution?

Increasing skin cancer and high mutation rate are the result of

Pick out the correct choice from the following

Minamata disease is caused by contamination of

Primary pollutants used in the synthesis of photochemical smog are-

Which pollutants are responsible for bronchitis?

BOD ____ in polluted water and _____ in potable water.

In Effluent Treatment Plants (ETPs), at which stage microorganism treatment is provided?

In india, the Air (prevention and Control of Pollution) Act came into force in 1981 but was emended in 1987 to
include

Limit of BOD prescribed by Central Pollution control Board for the discharge of industrial and municipal waste water
into natural surface water, is -

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