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Worksheetsenvironmental issues ca
Total questions: 59
Worksheet time: 35mins
The environmental (protection) act was passed in which year?
(a)
Tick all the biodegradable wastes from the list.
Sewage waste
DDT
Livestock waste
Cans
Broken glass
The scrubber is used mainly to remove which of the
following gas/es from the exhaust after spraying water/
lime ?
CO2
SO2
O2 and N2
CO and CO2
The diameter of particulate matter that causes greatest
harm to human health is
Less than or equal to 2.5 µm
Less than or equal to 0.25 µm
Less than or equal to 1 µm
Less than or equal to 0.1 µm
Which of the two expensive metals are used as catalysts
by catalytic converters and are fitted into automobiles for
reducing emission of poisonous gases ?
Platinum - palladium, rhodium
Cadmium, rhodium
Copper, cadmium
Lead, mercury
___________ is a cyclical zero-waste procedure, where
waste products from one process are cycled in as nutrients
for other processes.
Eutrophication
Integrated organic farming
Biomagnification
Green house effect
DDT causes egg shell thinning in birds because it inhibits
calmodulin
calcium ATPase
carbonic anhydrase
magnesium ATPase
Expand FOAM.
(a)
Which of the following binds with haemoglobin irreversibly?
Carbon dioxide
Oxygen
Carbon monoxide
Nitrogen
If a water body have high amount of DDT its BOD will
Decrease
Not-effect
Increase
First increase than decrease
Three Mile Island is related to
NO2– poisoning
SO2 pollution
Greenhouse effect
Radioactive pollution
Which of the following is a secondary pollutant?
SO2
CO2
CO
O3
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
Fe
Cl
Carbon
Oxygen
Which organism would be most severely affected by the presence of pesticides that can become biologically magnified in a given ecosystem?
Primary consumers, such as grasshopers
Primary producers, such as plants
Top predators
Decomposers, such as earthworms
Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for
Making plastic sacks
Use as a fertilizer
Construction of roads
Making tubes and pipes
Which of these following methods is the most suitable for disposal of nuclear waste?
Shoot the waste into space
Bury the waste under Antarctic ice-cover
Dump the waste within rocks under deep ocean
Bury the waste within rocks deep below the Earth's surface
Mark the odd one w.r.t. anthropogenic pollution
Particulate matter by volcanoes
Thermal power plant
Flour mill dust
Pesticides
Select the incorrect match
Biodegradable pollutant : Domestic sewage
Non-degradable pollutant : DDT
Secondary pollutant : SO2
Quantitative pollutant : Nitrogen oxides
Which of the following pollutant induces respiratory distress, inhibit ETS in chloroplast and causes glazing of leaves?
H2S
PAN
CO
NO2
Acid rain is rainfall with a pH of
7
6.56
<5.65
11
Which of the following device is used to remove over 99% particulate matter present in the exhaust from a thermal power plant?
Electrostatic precipitator
Scrubber
Catalytic convertor
Trajectorry separator
Euro norms and Bharat stages were given in new auto fuel for steadily reducing the _________ in petrol and diesel
Sulphur and particulate matter
Sulphur and O3
Sulphur and aromatic contents
Aromatic contents and NOx
Thinning of egg shells is a major effect in many species of predatory birds because of
Natural eutrophication
Cultural eutrophication
Biological magnification
Reduced BOD
Snow blindness is caused by
UV-B
Global warming
Radioactive pollution
Deforestation
Which of the following pair does not represent greenhouse gases?
CO2 and CH4
CH4 and N2O
O3 and SO2
N2O and CFCs
The highest DDT concentration in aquatic food chain shall occur in
phytoplankton
seagull
crab
eel
Increase in concentration of the toxicant at successive tropic levels is known as
biomagnification
biodeterioration
biotransformation
biogeochemical cycling
A lake which is rich in organic waste may result in
increased population of aquatic organisms due to minerals
drying of the lake due to algal bloom
increased population of fish due to lots of nutrients
mortality of fish due to lack of oxygen
The phenomenon by which certain pollutants (e.g. DDT) accumulate in body tissue in increasing concentration is called
Biological magnification
Biological reduction
Bio-precipitation
Bio-degradation
Minamata disease is caused by contamination of
Hg
Pb
Cd
As
Which is a non-degradable pollutant?
Smoke
Polythene
Copper scraps
Iron scraps
Which of the following is a natural pollutant?
Smog
Volcanic gases
Strong wind
Gale
As the organic waste input in a water body increases,
BOD increases
BOD decreases
BOD may increase or decrease
Cannot be said with surety
Pick out the correct choice from the following
As BOD increases, DO increases
As BOD increases, DO decreases
It depends on the water body and the surrounding environment
No such relation exists between BOD & DO
When and where the Ozone hole was discovered?
1985, Antarctica
1985, Arctic
1987, Arctic
1987, Antarctica
Thickness of ozone is measured in
Decibel
Dozen
Dobson
Meter
Which of the following is correct about “El Nino effect”?
temperature rise leads to odd climatic changes
cutting down the use of fossil fuels.
planting trees
slowing down the growth of human population.
According to size of air pollutants, range and types of chemical the below shown device is best used to control which of the following pollutants?
large particulates
charged particulate matter
dissolved gases
fine particles
When domestic sewage mixes with river water –
small animals like rats will die after drinking river water
the increased microbial activity releases micronutrients such as iron
the increased microbial activity uses up dissolved oxygen
the river water is still suitable for drinking as impurities are only about 0.1%
Biological oxygen demand of ________ is the least.
sewage
sea water
pure water
polluted water
We and our surroundings together are called...
environment
atmosphere
lithosphere
hydrosphere
Which method is used to control pollutants of particulate nature ?
Combustion
Absorption
Electrostatic precipitators
Oxidation pond
Which of the following figures shows correct relative contribution of greenhouse gases to global warming?
Observe the given graph. Identify 'A' and 'B'.
A- BOD and B- Oxygen
A- Oxygen and B- BOD
A- Dissolved oxygen and B- BOD
A- BOD and B- Dissolved oxygen
In the diagram, which arrow(s) represents the warming that's caused by the greenhouse effect?
1 and 3
2
4 and 6
5
7
Which of the following are greenhouse gases?
Carbon dioxide
Methane
Water vapor
All answers are correct
Find out the correct matching from the figure
c - CFC, a- NO2, d- CO2, b CH4
a - CFC, b- NO2, c- CO2, d- CH4
b- CFC, a- NO2, c- CO2, d- CH4
`b -CFC, a -NO2, d -CO2, c- CH4
The "good" ozone is found in
the lower part of the troposphere
the lower part of the stratosphere
the upper part of Stratosphere
entire stratosphere
Find the incorrect statement
CFCs are
use as refrigerants
they release Cl that degrades ozone
they form 4% of greenhouse gases
all are true
The number one reason for deforestation?
Logging
Agriculture
Urban development
To increase biodiversity
What are the reasons for deforestation? Tick ALL that apply
To provide timber as a fuel
Because people hate trees
To provide timber as a building material.
To provide extra land to grow crops
To provide extra land to rear animals
The first Chipko movement was started by
Sundar lal Bahuguna in Gharwal, Himalaya 1974
Amrita Devi Bishnoi 1931
Ramesh Chandra Nagar, Sonipat Haryana, 1973
Amrita Devi Bishnoi 1731
The fertile top layer of the soil can be removed by erosion due to
a. Over cultivation
b. Unrestricted grazing
c. Afforestation
d. poor irrigation practices
a, b, and c
a, b, and d
a, b, c, and d
b, c, and d
Waterlogging and soil salinity are some of the problems that have come in the wake of
Population explosion
Green revolution
Soil erosion and desertification
All of these
1. According to an estimate, almost ---a------ percent forests have been lost in tropics, compared to ----b---- percent in the temperate region.
2. At the beginning of the 20th-century forest cover in India was ----c---- and it shrunk to ---d--- percent.
3. National forest policy [1988] has recommended ----e--- for forest cover in plains and ----f--- for hills.
a-1, b-40, c-33, d-22.54, e-30, f-67
a-40, b-1, c-30, d- 21.54, e- 67, f-33
a-1, b-40, c-30, d-19.4, e-33, f-67
a-40, b-1, c-33, d-21.54, e-33, f-67
The process of restoring a forest that once existed but was removed at some point of time in the past is called
a, Reforestation
b. Afforestation
c. Deforestation
Both a and b
Realizing the significance of participation by local communities GOI has introduced the concept of
Integrated Forest Management
Joint Forest Mahotsav
Joint Forest Management
Jhum Forest Management
What is deforestation?
Cutting down some tree
Large scale cutting down of trees
Picking endangered flowers
Taking seeds from a woodland
Which of these is a consequences of deforestation
Forest habitats are destroyed and biodiversity is increased.
habitat fragmentation resulting in more animals
Forest habitats are destroyed and biodiversity is reduced.
more animals due to loss of trees
