- Refer to the given Venn diagram and select the correct
option regarding it.
Have high
penetration
powerHave low
penetration
powerType of
XYradiation(a) X is non-ionising radiation which includes ultraviolet rays.
(b) Y is ionising radiation which includes X-rays, cosmic
rays and atomic radiation.
(c) X may cause formation of thymine-dimer in DNA
whereas Y may cause sub-cutaneous bleeding in humans
exposing to high dose.
(d) X may cause genetic deformities which are inherited to
progeny whereas Y is known to cause skin cancer.- Fill the blanks with suitable words.
Catalytic converters, having expensive metals like (i)
and (ii) as the catalysts, are fitted into automobiles for
reducing emission of (iii).
(i) (ii) (iii)
(a) platinum-copper palladium poisonous gases
(b) tungsten-gold rhodium sewage matter
(c) platinum-gold palladium particulate matter
(d) platinum-palladium rhodium poisonous gases
- Read the following statements and select the correct option.
I. Classical smog is dark brown and opaque, formed by
condensation of water vapours with H 2 S and SO 2 over
dust or smoke particles.
II. Photochemical smog contains secondary pollutants or
photochemical oxidants.
III. Acid rain is the rainfall with a pH of less than 3 only.
IV. Acid rain causes stone leprosy.
(a) I and III are incorrect (b) I, II and IV are correct
(c) II and IV are correct (d) II, and III are incorrect - Green muffler scheme involves growing green plants
(a) along the road sides to reduce soil pollution
(b) along the road sides to reduce noise pollution
(c) in parks to reduce air pollution
(d) in houses of a locality to beautify the environment. - Match column I with column II and select the correct option
from the given codes. (There can be more than one match for
items in column I).
Column I Column II
A. Van Mahotsava (i) K.M. Munshi
B. Chipko movement (ii) Sunder Lal Bahuguna
C. JFM (iii) September 1983
D. Appiko movement (iv) First week of February
(v) Arabari Forest Range
(vi) Panduranga Hegde
(vii) Dasholi Gram Swarajya
Sangh
(viii) Ajit Kumar Banerjee
(a) A-(i, ii), B-(iii, v), C-(iv, vi), D-(vii, viii)
(b) A-(i, iv), B-(ii, vii), C-(v, viii), D-(iii, vi)
(c) A-(ii, v), B-(iii, iv), C-(i, vi), D-(vii, viii)
(d) A-(iv, viii), B-(ii, v), C-(i, vi), D-(iii, vii)- Which of the following is the correct sequence of steps
occurring during the primary treatment of sewage?
(a) Settling tank o Screening o Primary sludge
(b) Sequential filtration o Settling tank o Primary sludge
(c) Sequential filtration o Settling tank o Activated sludge
(d) Sedimentation o Screening o Primary sludge - Refer to the given graph. Identify A and B and select the correct
option regarding them.
(a) Sudden sewage dis-
charge into a river
will result in rise of B
because decomposers
consume a lot of CO 2.
(b) Fish and other clean
water organisms do not need A to sustain their lives.
(c) Sewage discharge into a river will result in rise of B
because decomposers consume a lot of O 2.
(d) Fish and other clean water organisms reproduce faster
if amount of B is high. - Read the following statements and select the incorrect option.
(a) Negative soil pollution is reduction in soil productivity
due to erosion and over-use.
(b) Pesticides are generally broad spectrum and function
as biocides.
(c) Positive soil pollution is increase in soil productivity due
to addition of undesirable substances.
(d) Landscape pollution is converting fertile land into
barren one by dumping wastes over it. - Incineration is the controlled aerobic combustion of wastes
inside chambers at the temperature of
(a) 900 – 1300 °C (b) 350 – 600 °C
(c) 1500 – 1800 °C (d) 1100 – 1500 °C. - Read the following statements and select the correct option.
Statement 1 : A sudden high intensity of sound produces a
startle reaction which may affect psychomotor performance.
Statement 2 : Noise pollution can cause increase in heart
beat, defective night and colour vision, sleeplessness, etc.
(a) Both statements 1 and 2 are true and statement 2 is
the correct explanation of statement 1.
(b) Both statements 1 and 2 are true but statement 2 is
not the correct explanation of statement 1.
(c) Statement 1 is true and statement 2 is false.
(d) Both statements 1 and 2 are false. - Refer to the given figure showing biological magnification of
DDT in an aquatic food chain and select the correct option.