The thickness of ozone is measured in
Dobson units
Decibel
Centi Morgan
Centi meter
UV rays are highly injurious to living organisms
Because DNA and Protein preferentially refract UV light
Because DNA and Protein preferentially radiate UV light in the form of heat energy
Because DNA and Protein preferentially absorb UV light and as a result chemical bonds are broken
Both B and C
In stratosphere
Find the wrong one out
Ozone is formed by the action of UV rays on molecular Oxygen
Ozone is degraded there
There is a balance between formation and degradation of ozone
There will be accumulation of Chlorofluorocarbons or CFCs which are acted upon by UV rays and protects the ozone layer.
Photochemical smog does not contain :
Ozone
NOx
PAN
Carbon monoxide
Identify the incorrectly matched pair with respect to contamination of water
Which award given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?
Slash and burn agriculture leads to nutrient depleted soils and deforestation if:-
crash crops are implanted rather than cereals
it is practiced in a sufficiently larger area
some useful trees are retained by the farmers
sufficient time is not allowed to the land to recover
The Montreal Protocol was signed in 1987 to:
prevent deforestation around the world
CFC have a continuing effect on ozone layer as:-
the Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone
the Cl atoms formed by them are used up in reactions causing degradation of ozone
they are being produced in increasing amounts all over the world
they are efficiently absorbed by the atmospheric water vapors
The normal greenhouse effect is necessary for survival of life on Earth as it has raised the temperature of Earth’s surface by:-
-18° C
15° C
33° C
50° C
The Three Mile island is famous as:
Burying the radioactive wastes is not acceptable to many people as:
The "Polyblend" developed by Ahmad Khan is a:
possible solution to accumulating plastic wastes
Ecological sanitation, also known as ecosan, is a new paradigm in sanitation that
High concentrations of accumulated DDT in birds
What was added in 1987 as a pollutant to The Air (Prevention and Control of Pollution) Act, [originally passed in 1981] :
According to CPCB, what particulate size is most harmful to humans:
The most effective device to remove particulate matter from polluted air is:
A catalytic converter :
The group most profoundly affected by global warming normally is :-
Plants
Which of the following radiatively active gases contributes the least to global warming?
CO2
CFC
N2O
CH4
Which of the following commits industrialized nations to reduce greenhouse gas emissions ?
To safeguard our water resources, the Water (Prevention and Control of Pollution) Act, was passed in:
1951
Eventually, the only solution for the treatment of e-wastes, provided it is carried out in an environment friendly manner, is:
Match each item in Column I with one item in Column II and choose the correct answer from the code given below:
Codes: A. B. C. D.
b a d c
d c b a
c d a b
What is eutrophication?
The nutrient enrichment of lakes and ponds
In what way does thermal pollution affect organisms?
Which of the following is not likely to happen as a result of the rising levels of CO2 in our atmosphere?
Increased incidents of skin cancer
Rise in sea levels
Change in climatic patterns
Shifts in locations of deserts and fertile regions
The UN Conference of Parties on climate change in the year 2011 was held in
Poland
South Africa
Peru
Qatar
Which one of the following statements is not valid for aerosols ?
They are harmful to human health
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