1.
In which of the following frequency ranges the human ear is most
sensitive to noise:
a.
1 - 2 KHz
b.
100 -
500 Hz
c.
10 - 12 KHz
d.
13 - 16 KHz
2.
Which of the following grows rapidly resulting in the shrinkage
of water bodies?
a. Phytoplankton
b. Zooplankton
c. Algae
d. Macrophytes
a. Phytoplankton
b. Zooplankton
c. Algae
d. Macrophytes
3.
Which species of chromium is toxic in water?
a.
Cr+ 2
b.
Cr+ 3
c.
Cr+6
d.
Cr°
4.
Chemical compounds having same crystal structure are called:
a.
Polymorphic
b.
Pseudomorphic
c.
Isomorphic
d.
None of the above
5.
Micas having an atomic structure defined as continuous sheets of
tetrahedrons, sharing 3-oxygen atoms, are called:
a.
Inosilicate
b.
Phyllosilicate
c.
Tectosilicate
d.
Sorosilicate
6.
If the population growth follows a logistic curve, the maximum
sustainable yield:
a.
is
equal to half the carrying capacity
b.
is equal to the carrying capacity
c.
depends on growth rate
d.
depends on the initial population
7.
Fluidized - bed combustion of coal is an efficient method of controlling
which of the following air pollutants:
a.
CO
b.
SPM and NOx
c.
NOx and Sox
d.
CO, SPM
and Sox
8.
An increase of 10 ppm in the concentration of CO, in atmosphere represents
approximately an
addition of carbon of amount:
addition of carbon of amount:
a.
1.2 Kilotons
b.
2.12
Megatons
c.
21.2 Geiga tons
d.
2120 tons
9.
Winds blowing down an incline often due to cold air drainage are
called:
a.
Anabatic winds
b.
Mountain
winds
c.
Cyclonic winds
d.
Katabatic winds
10.
Mixing height is:
a.
the height of ground based inversion
b.
the height at which geostrophic balance occurs
c.
the
height of constant solar flux layer
d.
the height upto which atmosphere is churned by convection
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