Question: From NCERT NEET Derived PYQ
Which award given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?
1. Venu Menon Animal Allies Award
2. Amrita Devi Bishnoi Award
3. David Shepherd Wildlife Award
4. The Pledge Award
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
Slash and burn agriculture leads to nutrient depleted soils and deforestation if:-
1. crash crops are implanted rather than cereals
2. it is practiced in a sufficiently larger area
3. some useful trees are retained by the farmers
4. sufficient time is not allowed to the land to recover
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
The Montreal Protocol was signed in 1987 to:
1. prevent deforestation around the world
2. control the emission of ozone depleting substances
3. control the green house gases
4. prevent hazards from radioactive nuclear wastes
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
CFC have a continuing effect on ozone layer as:-
1. the Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone
2. the Cl atoms formed by them are used up in reactions causing degradation of ozone
3. they are being produced in increasing amounts all over the world
4. they are efficiently absorbed by the atmospheric water vapors
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
The Three Mile island is famous as:
1. it hosted the Kyoto protocol
2. it was the site of a large oil spil
3. it was a site of nuclear accident
4. it hosted the Earth summit
Answer ▽
3
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Question: From NCERT NEET Derived PYQ
Ecological sanitation, also known as ecosan, is a new paradigm in sanitation that
1. eliminates the use of conventional pesticides to decrease environmental insult
2. recognizes human excreta and household waste water as resources that can and are recovered, treated, and reused
3. emphasizes the disposal of solid wastes in sanitary landfill sites
4. emphasizes the need for strict legislation against polluting industries
Answer ▽
2. recognizes human excreta and household waste water as resources that can and are recovered, treated, and reused
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Question: From NCERT NEET Derived PYQ
High concentrations of accumulated DDT in birds
1. kills pathogens in their blood
2. causes sterility by affecting gametogenesis
3. leads to premature breaking of eggs
4. causes spasticity of the muscles ofthe body
Answer ▽
3
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Question: From NCERT NEET Derived PYQ
What was added in 1987 as a pollutant to The Air (Prevention and Control of Pollution) Act, [originally passed in 1981] :
1. radioactive wastes
2. CFCs
3. ground level ozone
4. noise
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
Checking of re-radiating heat by atmospheric CO2 methane, ozone, dust is known as
1. green house effect
2. radioactive effect
3. ozone layer
4. solar effect.
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
Biological Oxygen Demand (BOD) is a measure of
1. industrial wastes poured into water bodies
2. extent to which water is polluted with organic compounds
3. amount of carbon monoxide inseparably
4. amount of oxygen needed by green plants during night.
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as
(1) N2O and CO2
(2) CFCs and N2O
(3) methane and CO2
(4) methane and CFCs
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
Smokestacks of thermal power plants, smelters and other industries release
(1) Particulate air pollutant
(2) Gaseous air pollutant
(3) Harmful gases
(4) All of these
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
Which of the following is not true about electrostatic precipator?
(1) It can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant
(2) Electrode wires maintained at thousand volts, which produce a corona that release electrons
(3) The protons are attached to dust particle give them a net positive charge
(4) The collecting plates attract the dust particles
Answer ▽
3
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Question: From NCERT NEET Derived PYQ
Scrubber
(1) Can remove only sulphur dioxide
(2) Can remove gases like sulphur dioxide
(3) Can remove harmless gases
(4) Mix harmless gases with gaseous pollutants
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
In scrubber, exhaust is passed through
(1) A spray of water/lime
(2) A spray of electrons
(3) A spray of other harmless gases
(4) All of these
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
CPCB stands for
(1) Control Pollution Central Board
(2) Central Population Control Board
(3) Central Pollution Control Board
(4) Control Population Central Board
Answer ▽
3
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Question: From NCERT NEET Derived PYQ
Which of the following is not a metal of catalytic converter?
(1) Platinum
(2) Palladium
(3) Rhodium
(4) Molybdenum
Answer ▽
4
A catalytic converter is a large metal box placed right behind the engines in the automobile. Its main function is to control the emission of harmful substances in the automobile by performing basic redox reactions.
A catalytic converter is a control device used in automobiles to reduce the number of pollutants they make. This exhaust emission control device uses reduction and oxidation reactions (redox) to convert toxic byproducts of combustion to less toxic substances. The engines of automobiles run on petroleum which is made from hydrocarbons. Whenever hydrocarbon fuels are burnt in the presence of oxygen(air), this leads to the release of carbon dioxide and water, and some pollutant gases.
The expensive metals used in this are Platinum, Palladium, and Rhodium which are used as catalysts. This device has two pipes coming out of it- the input pipe is connected to the engine and brings hot and polluted fumes from there while the output pipe is connected to the exhaust. The surface of the catalysts present are exposed, chemical reactions occur on them when engine fumes pass over the surface of these catalysts. Platinum is an active catalyst and used as a reduction as well as an oxidation catalyst. Rhodium is used as a reduction catalyst while Palladium is used as an oxidation catalyst. Chemical reactions occur on these catalysts that are present inside a honeycomb structure made from ceramic, and harmless gases are passed out from them that are released into the atmosphere from the automobile.
These metals used are rare, precious, expensive but have a broad range of applications and thus are often stolen from automobiles.
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Question: From NCERT NEET Derived PYQ
The expensive metals used in catalytic converters of automobiles are-
A. Cadmium and Rhodium
B. Platinum, Palladium and Rhodium
C. Lead and Cadmium
D. Copper and Cadmium
E. Lead and Mercury
Answer ▽
B
A catalytic converter is a large metal box placed right behind the engines in the automobile. Its main function is to control the emission of harmful substances in the automobile by performing basic redox reactions.
A catalytic converter is a control device used in automobiles to reduce the number of pollutants they make. This exhaust emission control device uses reduction and oxidation reactions (redox) to convert toxic byproducts of combustion to less toxic substances. The engines of automobiles run on petroleum which is made from hydrocarbons. Whenever hydrocarbon fuels are burnt in the presence of oxygen(air), this leads to the release of carbon dioxide and water, and some pollutant gases.
The expensive metals used in this are Platinum, Palladium, and Rhodium which are used as catalysts. This device has two pipes coming out of it- the input pipe is connected to the engine and brings hot and polluted fumes from there while the output pipe is connected to the exhaust. The surface of the catalysts present are exposed, chemical reactions occur on them when engine fumes pass over the surface of these catalysts. Platinum is an active catalyst and used as a reduction as well as an oxidation catalyst. Rhodium is used as a reduction catalyst while Palladium is used as an oxidation catalyst. Chemical reactions occur on these catalysts that are present inside a honeycomb structure made from ceramic, and harmless gases are passed out from them that are released into the atmosphere from the automobile.
These metals used are rare, precious, expensive but have a broad range of applications and thus are often stolen from automobiles.
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Question: From NCERT NEET Derived PYQ
Catalytic converter does
(1) Unburnt Hydrocarbons are converted into carbon dioxide and water
(2) CO is converted into Carbon dioxide
(3) Nitric acid is converted into Nitrogen G gas
(4) All of these
Answer ▽
4
A catalytic converter is a vehicle emission control device that converts toxic pollutants of the exhaust gas into less toxic pollutants by catalysing a redox reaction. Catalytic converters, having expensive metals namely platinum-palladium and rhodium as the catalysts, are fitted into automobiles for reducing emission of poisonous gases. Rhodium is used as reduction catalyst, palladium is used as an oxidation catalyst, and platinum is used both for oxidation and reduction. As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into carbon dioxide and water, and carbon monoxide and nitric oxide are changed to carbon dioxide and nitrogen gas, respectively. Motor vehicles equipped with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst.
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Question: From NCERT NEET Derived PYQ
Assertion;
Through the use of catalytic converters, unburnt hydrocarbons are changed into carbon monoxide which in turn is changed into nitrogen oxides and water.
Reason;
Motor vehicles equipped with catalytic converters should use leaded petrol to protect the catalyst from degradation.
Through the use of catalytic converters, unburnt hydrocarbons are changed into carbon monoxide which in turn is changed into nitrogen oxides and water.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
Answer ▽
Correct option is D)
A catalytic converter is a vehicle emission control device that converts toxic pollutants of the exhaust gas into less toxic pollutants by catalysing a redox reaction. Catalytic converters, having expensive metals namely platinum-palladium and rhodium as the catalysts, are fitted into automobiles for reducing emission of poisonous gases. Rhodium is used as reduction catalyst, palladium is used as an oxidation catalyst, and platinum is used both for oxidation and reduction. As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into carbon dioxide and water, and carbon monoxide and nitric oxide are changed to carbon dioxide and nitrogen gas, respectively. Motor vehicles equipped with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst.
So, the correct answer is 'Both Assertion and Reason are incorrect'.
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Question: From NCERT NEET Derived PYQ
The Air Prevention and Control of Pollution act came into force in….. but was amended in …..
(1) 1981, 1986
(2) 1986, 1987
(3) 1981, 1987
(4) 1976, 1986
Answer ▽
3
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Question: From NCERT NEET Derived PYQ
All the buses of Delhi were converted to run on CNG
(1) Before the orders of Supreme court
(2) By the end of 2002
(3) In 1990
(4) Under the act of environment in 1987
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
Which of the following is not used for controlling air Pollution in Delhi?
(1) Phasing out of old vehicle
(2) Use of unleaded petrol
(3) Use of low sulphur petrol and diesel
(4) Use of electrostatic precipitator in Vehicles
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
Aromatic hydrocarbons should be 42 per cent of the concerned fuel. This was according to
(1) Euro II Norms
(2) Euro III Norms
(3) Euro IV Norms
(4) Euro I Norms
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
To safeguard our water resources, Government of India has passed the
(1) Water (Prevention and Control of Pollution) Act in 1974
(2) Water (Prevention and Control of Pollution) Act in 1981
(3) Water (Prevention and Control of Pollution) Act in 1987
(4) Water (Prevention and Control of Pollution) Act in 1990
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
How much amount of impurities are present in waste water which make it unfit for human use?
(1) 0.01%
(2) 0.1%
(3) 0.2%
(4) 2%
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
Biodegradable organic matter of domestic sewage is used as a substrate by
(1) Bacteria and Other microbes
(2) Industries
(3) Lichens
(4) All of these
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
Water hyacinth
Find the odd one out
(1) Eichhornia crassipes
(2) Introduced in India for their lovely flowers
(3) Have mauve colored flowers
(4) Does not has any characteristic shape
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
Sewage has heavy metals
(1) Elements with density greater than 5g /cm3
(2) Elements with density greater than 10g /cm3
(3) Elements with density greater than 15g /cm3
(4) Substances with density greater than 0.3g/cm3
Answer ▽
(1) Elements with density greater than 5g /cm3
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Question: From NCERT NEET Derived PYQ
Biomagnification is a well known phenomenon for
(1) Mercury
(2) DDT
(3) Silver
(4) Both A and B
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
Concentration of DDT in water is 0.003 ppb, what can be the most commonly seen concentration of DDT in zooplankton?
(1) 4 ppb
(2) 5 ppm
(3) 0.04 ppm
(4) 2 ppm
Answer ▽
3
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Question: From NCERT NEET Derived PYQ
Biomagnification of DDT in a fish eating bird can reach to
(1) 20 ppm
(2) 20 ppb
(3) 25 ppb
(4) 25 ppm
Answer ▽
4
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Question: From NCERT NEET Derived PYQ
High concentration of DDT directly disturbs
(1) Calcium Metabolism in birds
(2) Thinning of eggshell
(3) Premature breaking of eggshell
(4) Decline in bird population
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
Streams draining into the lake and introduce nutrients such as ………
(Young lake)
(1) Nitrogen and Phosphorus
(2) DDT and cadmium
(3) DDT
(4) Calcium
Answer ▽
1
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Question: From NCERT NEET Derived PYQ
The animals which live in warm areas will prefer
(1) A young lake
(2) An old lake
(3) Lake with no nutrients
(4) Cannot be predicted
Answer ▽
2
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Question: From NCERT NEET Derived PYQ
The prime contaminants of sewage water which act as plant nutrient are
(1) Nitrates and Phosphates
(2) Phosphates
(3) Nitrates, DDT
(4) Cadmium and DDT
Answer ▽
1
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