Environmental Issues

Which one of the following is a wrong statement?

In an area where DDT had been used extensively, the population of birds declined significantly
because :

Measuring biochemical oxygen demand (BOD) is a method used for

Which one of the following pairs of gases are the
major cause of "Green house effect"?

Eutrophication is often seen in :

Which one of the following statements is wrong
in case of Bhopal tragedy ?

Which one of the following is correct expanded forms of
the following acronyms ?

''Good ozone'' is found in the :

A renewable exhaustible natural resource is –

The two gases making highest relative
contribution to the green house gases are –

dB is a standard abbreviation used of the
quantitative expression of –

When domestic sewage mixes with river water -

Montreal protocol aims at :

DDT residues are rapidly passed through food
chain causing biomagnification because DDT is :

Biochemical Oxygen Demand (BOD) in a river
water :

Global agreement in specific control strategies to
reduce the release of ozone depleting substances,
was adopted by :

Chipko movement was launched for the
protection of -

Step taken by the Government of India to control
air pollution include :

Which one of the following is the correct
percentage of the two (out of the total of 4)
greenhouse gases that contribute to the total
global warming ?

According to Central Pollution Control Board
(CPCB), which particulate size in diameter (in
micrometers) of the air pollutants is responsible
for greatest harm to human health?

A lake near a village suffered heavy mortality of
fishes within a few days. Consider the following
reasons for this?
(i) Lots of urea and phosphate fertilizer were
used in the crops in the vicinity
(ii) the area was sprayed with DDT by a...

Which one of the following is not a bioindicator
of water pollution ?

In which one of the following the BOD
(Biochemical Oxygen Demand) of sewage (S),
distillery effluent (DE), paper mill effluent (PE)
and sugar mill effluent (SE) have been arranged
in ascending order ?

Which one of the following statements is correct ?

In a coal fired power plant electrostatic
precipitators are installed to control emission of:-

Montreal Protocol which calls for appropriate
action to protect the ozone layer from human
activities was passed in the year-

Photochemical smog pollution does not contain-

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

Prolonged liberal irrigation of agricultural fields
is likely to create the problem of -

Which of the following is not used for
disinfection of drinking water ?

Identify the correctly matched pair -

Which one of the following pairs is
mismatched ?

Lead concentration in blood is considered
alarming if it is -

In 1984, the Bhopal gas tragedy took place
because methyl isocyanate :-

Common indicator organism of water pollution
is :-

Escherichia coli is used as an indicator
organism to determine pollution of water with ;-

Fluoride pollutions mainly affects : -

Maximum green house gas released by which
country :

Which of the following is absent in polluted
water ?

What is B.O.D ?

What is the intensity of sound in normal
conversation ?

Which is the cause of damage to relative
biological effectiveness ?