38 ENVIRONMENTAL ISSUES QUESTIONS
ENVIRONMENTAL ISSUES QUESTIONS
__________ are the agents that bring undesirable changes in physical, chemical or biological characteristics of air, land, water or soil.
A) Pollution B) Pollutants C) Contagion D) Particulate matter
ANSWERB) Pollutants
Environment (protection) Act was passed in ________
A) 1990 B) 1996 C) 1986 D) 1948
ANSWERC) 1986
Environment (protection) Act was passed by ________
A) WHO
B) Forest and environment minister of USA
C) Water conservation committee of world
D) Government of india
ANSWERD) Government of india
_________ is the most widely used method of removing particulate matter from air
A) Wet scrubbers B) Venturi scrubbers
C) Fume scrubber D) Electrostatic precipitator
ANSWERD) Electrostatic precipitator
In electrostatic precipitator, _______ attach to dust particle giving them a net negative charge
A) Proton B) Negatively charged wire
C) Electron D) Another dust particles
ANSWERC) Electron
CPCB stands for
A) Control pollution central board B) Central population control board
C) Central pollution control board D) Control population central board
ANSWERC) Central pollution control board
According to CPCB, particulate size ________ are responsible for causing the greatest harm to human health
A) 2.0 micrometers or more in diameter B) 2.0 micrometers or less in diameter
C) 2.5 micrometers or less in diameter D) 2.5 micrometers or more in diameter
ANSWERC) 2.5 micrometers or less in diameter
Catalytic converters, having expensive metals namely ______ and ______ as the catalysts are fitted into auto mobiles for reducing emission of poisonous gases.
A) platinum – palladium and rhodium
B) osmium – platinum and rhodium
C) silver – platinum and indium
D) ruthenium – palladium and rhodium
ANSWERA) platinum – palladium and rhodium
In India, the air (prevention and control of pollution) Act come into force in ______
A) 1980 B) 1982 C) 1988 D) 1981
ANSWER D) 1981
Label the figure correctly using given correct option –
(i) |
(ii) |
(iii) |
|
| A | Discharge corona | Negatively charged wire | Collection plate grounded |
| B | Electron | Nucleus | Collection plate |
| C | Negatively charged wire | Discharge corona | Collection plate |
| D | Dust particles | Negatively charged wire | Collection plate grounded |
ANSWER (A)
Which among the following is used in scrubber to clean the exhaust air?
A) Water or lime B) Chlorine C) Platinum D) Molybdenum
ANSWERA) Water or lime
What does PIL stands for
A) People Interest Limitation B) Public Interest Litigation
C) Population Interest Litigation D) Personal Interest Litigation
ANSWERB) Public Interest Litigation
Which among the following is best to use as a fuel for public transport?
A) Petrol B) Diesel
C) Compressed Natural Gas (CNG) D) Gasoline
ANSWERC) Compressed Natural Gas (CNG)
Statement P : CNG is better than petrol and diesel
Statement Q : CNG burns most efficiently and left with very little of unburnt residue
A) P is correct and Q is wrong B) Both statements are correct
C) P is wrong and Q is correct D) Both statements are wrong
ANSWERB) Both statements are correct
Use of ______ and ________ reduces the vehicular pollution.
A) Leaded petrol and low sulphur petrol
B) Unleaded petrol and high sulphur petrol
C) Unleaded petrol and low sulphur petrol and diesel.
D) Leaded petrol and high sulphur petrol
ANSWERC) Unleaded petrol and low sulphur petrol and diesel.
Which among the following is correct option –
ACC. to Euro III norms –
A) Sulphur be controlled at 350 ppm in diesel
B) Sulphur be controlled at 150 ppm in diesel
C) Sulphur be controlled at 370 ppm in diesel
D) Sulphur be controlled at 360 ppm in diesel
ANSWERA) Sulphur be controlled at 350 ppm in diesel
Bharat stage II is equivalent to which among the following –
A) Euro – III norms B) Euro – I norms
C) Euro – II norms D) Euro – IV norms
ANSWERC) Euro – II norms
(i) Bharat stage III – norms is applicable to 4 wheelers, 3 wheelers, 2 wheelers
(ii) Bharat stage III norm is implemented throughout the country since May 2017
A) Both (i) and (ii) are correct B) (i) is correct and (ii) is wrong
C) (i) is wrong and (ii) is correct D) Both (i) and (ii) are wrong
ANSWERB) (i) is correct and (ii) is wrong
Water (Prevention and Control of pollution) Act was passed in which year?
A) 1981 B) 1974 C) 1989 D) 1986
ANSWERB) 1974
Choose the correct option –
Impurities in waste water
| 1 | Suspended solids | i | Fecal matter, bacteria |
| 2 | Colloidal material | ii | Nitrate, Calcium |
| 3 | Dissolved material | iii | Sand, Silt, Clay |
A) 1-i, 2-ii, 3-iii B) 1-ii, 2-i, 3-iii C) 1-iii, 2-i, 3-ii D) 1-ii, 2-iii, 3-i
ANSWERC) 1-iii, 2-i, 3-ii
Label the given figure
| (i) | (ii) | (iii) | |
| A | BOD | Dissolved O2 | Clean water |
| B | BOD | Dissolved O2 | Sewage discharge |
| C | Dissolved O2 | BOD | Sewage water |
| D | Dissolved O2 | BOD | Clean water |
ANSWER(C)
BOD stands for –
A) Biological Oxygen Demand
B) Biochemical Oxygen Demand
C) Biodegradable Oxygen Demand
D) Biological Oxygen Dissolved
ANSWER B) Biochemical Oxygen Demand
(i) Dissolved salts like nitrates, phosphates, toxic metal ions and organic compounds are most easy to remove from sewage water
(ii) A mere 0.1 % impurities make domestic sewage unfit for human use
(iii) Most of domestic sweage are not readily decomposed
How many among the above statements are correct ––
A) 0 B) 1 C) 2 D) 3
ANSWER B) 1
Assertion : It is possible to estimate the amount of non – biodegradable organic matter in sewage water by measuring BOD.
Reason : Bacteria and other micro-organism multiply using the organic substances as substrate and utilizes some of the components of sewage –
A) Assertion is wrong Reason is correct
B) Both are wrong
C) Assertion is correct but Reason is wrong
D) Both are correct
ANSWER A) Assertion is wrong Reason is correct
Free-Floating algae are also called _______
A) Euglenoids
B) Planktonic-algae
C) Hydro algae
D) Dinoflagellates algae
ANSWER B) Planktonic-algae
What is the cause of algal bloom? –
A) Excessive growth of planktonic algae due to presence of large amount of nutrient in water
B) Excess of fish mortality in water
C) Discharge of harmful elements like lead, mercury, etc in water bodies through industries
D) Nitrogen – fixing bacteria present in water bodies fixes nitrogen and results in the spread of vegetation
ANSWER A) Excessive growth of planktonic algae due to presence of large amount of nutrient in water
Which among the following are not consequences of algal bloom –
A) Imparting distinct colors to the water bodies
B) Deterioration of water quality
C) Fish natality
D) Toxicity to human being and animals
ANSWER C) Fish natality
Scientific name of water hyacinth –
A) Eichhornia crassipes B) Elodeo canadensis
C) Epomoea quamoclit D) Etroplus surotensis
ANSWER A) Eichhornia crassipes
Which among the following is called ‘ Terror of Bengal ’ ?
A) Nelumbo nucifera
B) Ceratrophyllum submeresum
C) Eichhornia crassipes
D) Lemma minor
ANSWER C) Eichhornia crassipes
Which among the following is not true about water hyacynth?
A) There are the world’s most problematic aquatic weed.
B) These are introduced in the India for their rapid growing ability
C) They have very beautiful flowers
D) They cause imbalance in the ecosystem dynamics of the water bodies
ANSWER B) These are introduced in the India for their rapid growing ability
Match the following –
| 1 |
Water |
i |
DDT 0.5 ppm |
| 2 | Zooplankton | ii | DDT 2 ppm |
| 3 | Small fish | iii | DDT 0.003 ppm |
| 4 | Large fish | iv | DDT 25 ppm |
| 5 | Fish – Eating birds | v | DDT 0.04 ppm |
A) 1-iii, 2-v, 3-i, 4-ii, 5-iv B) 1-i, 2-ii, 3-v, 4-iv, 5-iii
C) 1-ii, 2-v, 3-iv, 4-i, 5-iii D) 1-iii, 2-iv, 3-i, 4-v, 5-ii
ANSWER A) 1-iii, 2-v, 3-i, 4-ii, 5-iv
Heavy metals like mercury, lead, etc have density greater than ______?
A) 5 g/cm3 B) 5 mg/cm3 C) 25 g/cm3 D) 25 mg/cm3
ANSWER A) 5 g/cm3
Which among the following refers to the increase in concentration of the toxicant at successive trophic level –
A) BOD B) Biomagnification C) Biofortification D) Eutrophication
ANSWER B) Biomagnification
Assertion : Toxic substances get passed on to the next higher trophic level
Reason : Toxic substances get accumulated by an organism cannot be metabolished or excreted –
A) Both are correct
B) Assertion is correct but Reason is wrong
C) Assertion is wrong but Reason is correct
D) Both are wrong
ANSWER A) Both are correct
High concentration of DDT disturb calcium metabolism in bird which causes –
A) Thinning of eggshell B) Premature breaking of eggshell
C) Decline in bird population D) All of these
ANSWER D) All of these
Which among the following is a term used for natural aging of lake –
A) Biomagnification B) Eutrophication
C) Euphorbism D) Eumagnification
ANSWER B) Eutrophication
What causes eutrophication? –
A) Introduction of nutrients like nitrogen and phosphorus
B) Introduction of harmful elements like lead
C) Introduction of plastic waste
D) None of these
ANSWER A) Introduction of nutrients like nitrogen and phosphorus
Which among the following statements are correct?
i) Eutrophication is long process which may even take thousands of years
ii) Eutrophication encourages growth of aquatic organisms
iii) Eutrophication leads to the conversion of fresh lake into polluted and deteriorate lake
A) (ii) and (iii) B) Only (i) C) (i) and (ii) D) All
ANSWER C) (i) and (ii)
Eutrophication finally leads to the conversion of lake into which among the following?
A) Deep swampy pond B) Land
C) Polluted pond D) Lake with silt and organic content at base
ANSWER B) Land
Which among the following can accelerate the process of eutrophication
A) Organic waste from household B) Plastic waste
C) Sewage and agricultural waste D) Both A & C
ANSWER C) Sewage and agricultural waste
Accelerated aging process of natural lake by pollutants from mans activities are called _______
A) Cultural eutrophication B) Man-made eutrophication
D) More than one option is correct
ANSWER C) Accelerated eutrophication
Prime contaminants, that causes severe eutrophication and also act as plant nutrients are ______
A) Calcium B) Nitrate C) Phosphate D) Both B & C
ANSWER D) Both B & C
Which of below option is correct?
Pollutants from thermal power plants results in ––
i) Elimination of organism sensitive to high temperature
ii) Elimination of organisms sensitive to low temperature
iii) Enhance the growth of organisms in extremely cold areas
iv) Certainly has no effect on the organisms
A) Only I B) ii and iii C) i and iii D) only iv
ANSWER C) i and iii
Arcata is situated along the –
A) North coast of California B) Eastern part of Europe
C) Southern part of Germany D) Middle zone of France
ANSWER A) North coast of California
The series of six connected marshes spread over how much area in the integrated waste water treatment?
A) 600 hectares B) 60 hectares C) 600 Acre D) 60 Acre
ANSWER B) 60 hectares
Which among the following is true about the second stage of the Arcata integrated waste water treatment? (A) It comprises of marshes which contain algae, fungi and bacteria, which neutrises absorb and assimilate the pollutants
B) Marshes go with conventional sedimentation filtering and chlorine treatment
C) Marshes constitute of a sanctuary with a high level of biodiversity
D) Both (i) and (iii)
ANSWER D) Both (i) and (iii)
Who are responsible for the safeguarding of integrated waste water treatment in Arcata?
A) FOAM B) POAM C) COAM D) DOAM
ANSWER A) FOAM
What does FOAM stands for? –
A) Family of Arcata Marsh B) Friends of Arcata Marsh
C) Family of Arcata Mission D) Friends of Arcata Mission
ANSWER B) Friends of Arcata Marsh
Which among the following is a sustainable system for handling human excreta using dry composting toilets?
A) Recycle sanitation B) Biological sanitation
C) Ecological sanitation D) None of these
ANSWER C) Ecological sanitation
Name of dry composting toilets used in many areas of Kerala and Sri Lanka–
A) Bio san B) Com san C) Chem san D) Eco san
ANSWER D) Eco san
Municipal solid waste include waste from –
(A) Homes and schools B) Hospitals
C) Stores and office D) All of these
ANSWER D) All of these
_______were adopted as the substitute for open – burning dumps
A) sanitary landfills B) decomposing pit
C) shallow pit D) none of these
ANSWER A) sanitary landfills
Problems with landfills to dump wastes are—
A) large amount of garbage results in rapidly filling of landfills
B) seepage of chemicals causing soil contamination
C) Contamination of groundwater
D) all of these
ANSWER D) all of these
Waste that is generated is categorized into the following type-
i) bio-degradable ii) nonbiodegradable
iii) contaminated waste iv) recyclable waste
A) only i and ii B) i, ii and iii C) i, ii and iv D) All of these
ANSWER C) i, ii and iv
What is incinerators?
A) Chemicals used for degradation of waste
B) Micro-organisms that degrade waste
C) Area where waste products are dumped
D) Furnace wear waste are burned
ANSWER D) Furnace wear waste are burned
Crucial step for safe disposing hospital waste is
(A) disinfecting the waste products
B) using of incinerators
C) disposal in water bodies
D) none of these
ANSWER B) using of incinerators
What are irreplarable computers and electronic wastes are called?
A) E – waste B) C – waste C) A – waste D) B – waste
ANSWER A) E – waste
How E – waste are treated without damage to environment and human life?
A) Recycling B) Buried in pit / landfills
C) Incinerated D) All of these
ANSWER D) All of these
Which among the following is produced by Ahmed Khan’s company?
A) Bitumen B) Polyblend C) Karlit D) Qualinite
ANSWER B) Polyblend
Polyblend is obtained by which of the following?
A) By making a paste of recycled modified plastic
B) By making a powder of recycled modified plastic
C) By making a paste of non-recycled unmodified plastic
D) By making a powder of non-recycled unmodified plastic
ANSWER A) By making a paste of recycled modified plastic
Polyblend is mixed with which among the following to lay roads?
A) Karolinite B) Allinite C) Bitumen D) Dalinite
ANSWER C) Bitumen
What are the factors by which khan prove that his innovation is better way to lay road–
A) Enhanced water repellent properties
B) This increases the road life by a factor of 3
C) Accumulation of plastic waste reduced
D) All of these
ANSWER D) All of these
Ahmed khan collaborated with –
A) R.V. College of Engineering
B) Jawaharlal Medical College
C) Bangalore City Corporation
D) Both A and C
ANSWER
A) R.V. College of Engineering
What are the effects of Green Revolution? –
A) Increased crop production
B) widely used inorganic fertilizer and pesticides
C) increased toxicity to soils ecosystem
D) all of these
ANSWERD) all of these
Which among the following is correct? –
i) Increase the use of chemical fertilizer can be biomagnified in terrestrial ecosystem and can be toxic
ii) increased used of chemical fertilizer is useful for aquatic ecosystem as it undergoes Eutrophication in faster rate
A) only (i) B) only (ii) C) (i) and (ii) D) None of these
ANSWERA) only (i)
What is the key point of integrated organic farming? –
A) Preference of mixed farming
B) Waste product from one process are cycled in as nutrient for other process
C) Minimizing the use of chemical fertilizer
D) All of these
ANSWER
What are the results of integrated organic family? –
A) Maximum utilization of resources B) Increased efficiency of production
C) Higher profitability to farmer D) All of these
ANSWER
How many among the following are true for Dagar’s idea of integrated organic farming
i) he included Bee – keeping dairy, water harvesting, composting and agriculture in his farm
ii) he uses cattle dung as manure to crops
iii) he uses crop waste only to generate natural gas but not for compost formation
iv) he uses chemical fertilizer for crops
A) 1 B) 2 C) 3 D) 4
ANSWER
Who was the founder of Haryana kisan welfare club?
A) Suresh Dagariya B) Raju Chandra Bhushan
C) Ahmad Khan D) Ramesh Chandra Dagar
ANSWER
Three Mile Island and Chernobyl incidents are related to which among the following?
A) Leakage of chemical gas B) Leakage of radioactive gas
C) release of contaminated wastewater D) none of these
ANSWER
How radiation given off by nuclear waste is damaging to organisms? –
A) They cause mutation at very high rate
B) They cause disorders by altering the gene sequence
C) they cause cancer
D) all the above
ANSWER
What is the best method to dispose nuclear waste? –
A) Bury then deep down in Atlantic Ocean
B) after pre-treatment bury within the rock in shielded container 500-meter-deep below the earth
C) taking these wastes to the other planet and disposing there.
D) all of these
ANSWER
From where does term ‘Greenhouse effect’ has been derived? –
A) From Green Terrestrial Surface
B) Phenomena occurring in green plants
C) phenomena that occurs in greenhouse
D) scientist named Greenhouse
ANSWER
Why greenhouse is actually used for plants? –
A) It is used to maintain the soil health for growing plant
B) It is used to grow plants especially in winter as it’s warm from inside providing plants good temperature to grow
C) It provide plants cool temperature and environment to grow
D) all of these
ANSWER
Which among the following phenomena is responsible for natural heating of Earth’s surface and atmosphere? –
A) Absorption of heat (sun) rays
B) Greenhouse effect
C) Emission of radioactive raise from nuclear plant
D) Doppler’s phenomena
ANSWER
Earth receives incoming solar radiation in the form of _______.
A) Long wave radiation B) Short wave radiation
C) Electronic wave radiation D) Magnetic wave radiation
ANSWER
In which form earth’s surface re-emits heat, that does not escape into space?
A) Infrared radiation B) UV rays C) PAR D) All of these
ANSWER
Match the following-
Relative contribution of various greenhouse gasses to total global warming
| 1 | CO2 | I | 20% |
| 2 | Methane | II | 14% |
| 3 | CFC | III | 60% |
| 4 | N2O | IV | 6% |
A) 1-II, 2-III, 3-IV, 4-I B) 1-III, 2-II, 3-IV, 4-I
C) 1-IV, 2-I, 3-II, 4-III D) 1-III, 2-I, 3-II, 4-IV
ANSWER
Assertion : greenhouse gasses are responsible for greenhouse effect.
Reason : Earth receives incoming solar radiation in short wave radiation some radiation get reflected back, some get fall in Earth’s surface heating it, earth again re-emits heat in form of infrared rays and get absorbed by greenhouse gases these gases again radiate them and cycle get repeated many times and keep earth surface warm –
A) Assertion is correct and Reason is wrong
B) Both are correct
C) Assertion is wrong and Reason is correct
D) Both are wrong
ANSWER
What is the result of increased level of greenhouse gasses? –
A) Global warming
B) melting of ice glaciers in Polar region
C) abnormal weather phenomena (El Nino effect)
D) all of these
ANSWER
What portion of incoming solar radiation get reflected by clouds and gases without reaching to the earth’s surface? –
A) 1/3 rd B) 1/4 th C) 2/3 rd D) 1/2 nd
ANSWER
What would be the average temperature of earth if there would be no greenhouse effect?
A) 0°C B) 15°C C) -18°C D) -105°C
ANSWER
Bad ozone is found in which layer? –
A) Upper Stratosphere B) Thermosphere
C) Troposphere D) Ionosphere
ANSWER
Good ozone is found in which layer?
A) Upper Stratosphere B) Thermosphere C) Troposphere D) Ionosphere
ANSWER
The thickness of ozone layer is measured by
A) Fukin unit B) Delberg unit C) Dobson unit D) Colleit unit
ANSWER
The area where, ozone layer is thin is known as
A) Ozone reduced area B) Ozone hole C) Spare ozone area D) Zero ozone
ANSWER
At which area, ozone hole is prominent?
A) Above antarctica B) Above north Pacific ocean
C) Above Atlantic ocean D) Above whole Asia
ANSWER
What is the time period at which ozone hole area Antarctica develops each year?
A) Late August – early October B) January – Feburary
C) Early March – Late March D) Mid December – Mid January
ANSWER
How ozone gas are formed?
A) By action of UV rays on molecular oxygen
B) By action of infrared rays on molecular oxygen
C) By action of PAR on molecular oxygen
D) none of the above
ANSWER
Full Form of CFCs is
A) Chlorofluoro cation
B) Chlorofluroscent carbon
C) Chlorofluoro carbon
D) Cationicfluoroin carbon
ANSWER
Which among the following is true about CFCs?
i) It degrades the ozone layer
ii) By the action of UV ray CFCs releases Cl atom
iii) Cl bind with ozone and releases molecular oxygen and act as merely catalysts
iv) Cl atom are consumed in the reaction
A) Only i and ii B) Only i and iii C) i, ii and iii D) all of these
ANSWER
What are the effects of UV – B rays?
A) Damages DNA by causing mutation
B) Causes inflammation of Cornea, snow-blindness,
C) causes cataract
D) All of these.
ANSWER
Which among the following international treaty was signed to control emission of ozone depleting substances?
A) Kyoto Protocol B) Nagoya Protocol C) Earth summit D) Montreal Protocol
ANSWER
In which year Montreal Protocol was signed?
A) 1990 B) 1985 C) 1986 D) 1987
ANSWER
What cause soil erosion?
A) Un-restricted grazing B) Deforestation
C) Poor-irrigation practices D) All of these
ANSWER
What are the effect of water logging?
A) It result in soil salinity as it draws salt from underground and deposit on land surface as thin crust.
B) It results in accumulation of acid on soil surface.
C) It results in desertification.
D) All of these.
ANSWER
When was National Forest Policy came?
A) 1987 B) 1985 C) 1988 D) 1986
ANSWER
Another name of slash and burn agriculture is _______.
A) Sling cultivation B) Donum cultivation
C) Jhum cultivation D) Fiala cultivation
ANSWER
Assertion: Jhum cultivation also causes deforestation
Reason: It include cutting down of trees in forest and burned the remaining plant. Ashes used as fertilizer and land is used for cultivation, then same process is repeated to another area due to increased population time-gap given is limited for recovery and results in deforestation.
A) Assertion and Reason both are correct
B) Assertion is correct but Reason is wrong
C) Both are wrong
D) Assertion is wrong but reason is correct
ANSWER
The process of restoration of forest that once existed, but was removed at some point of time in past is called _______ .
A) Deforestation B) Repeated forestation
C) Reforestation D) All of these
ANSWER
Amrita devi was a lady from which community?
A) Garwhal B) Bajpah C) Bishnoi D) Barwal
ANSWER
Chipko movement was performed in?
A) Diwanans Gujarat B) Bishnoi Gir forest
C) Garhwal Himalayas D) Deoni Delhi
ANSWER
When was Chipko movement observed?
A) 1972 B) 1971 C) 1973 D) 1974
ANSWER
What does JFM stand for?
A) Junior Federation of Management
B) Junior Forest Manager
C) Joint Fellowship Management
D) Joint Forest Management
ANSWER
Which among the following award is given to the individual community for their extraordinary courage and dedication in protecting wildlife?
A) Chipcombent award.
B) Amrita Devi Bisnoe wildlife protection award.
C) Garval wildlife protection award
D) none of these.
ANSWER
World Ozone Day is celebrated on:
(a) 5th June (b) 21st April (c) 22nd April (d) 16th September
ANSWER
Which of the following is a secondary pollutant?
(a) CO (b) CO2 (c) O3 (d) SO2
ANSWER
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
(a) Carbon (b) Cl (c) Oxygen (d) Fe
ANSWER
Match the items given in Column I with those in Column II and select the correct option given below: [2018]
Column-I Column-II
Eutrophication i. UV-B radiation
Sanitary landfill ii. Deforestation
Snow blindness iii. Nutrient enrichment
Jhum cultivation iv. Waste disposal
A B C D A B C D A B C D A B C D
(a) ii i iii iv (b) i iii iv ii (c) i ii iv iii (d) iii iv i ii
ANSWER
Which one of the following statements is not valid for aerosols?
(a) They alter rainfall and monsoon patterns.
(b) They cause increased agricultural productivity.
(c) They have negative impact on agricultural land.
(d) They are harmful to human health.
ANSWER
A river with an inflow of domestic sewage rich in organic waste may result in:
(a) drying of the river very soon due to algal bloom.
(b) increased population of aquatic food web organisms.
(c) an increased production of fish due to biodegradable nutrients.
(d) death of fish due to lack of oxygen.
ANSWER
Joint Forest Management Concept was introduced in India during:
(a) 1960s (b) 1970s (c) 1980s (d) 1990s
ANSWER
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers.
(a) Nitrous oxide (b) Ozone (c) Ammonia (d) Methane
ANSWER
Acid rain is caused by increase in the atmospheric concentration of :
(a) SO3 and CO (b) CO2 and CO (c) O3 and dust (d) SO2 and NO2
ANSWER
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
(a) light (b) essential minerals (c) oxygen (d) food
ANSWER
High value of BOD (Biochemical Oxygen Demand) indicates that:
(a) Water is highly polluted
(b) Water is less polluted
(c) Consumption of organic matter in the water is higher by the microbes
(d) Water is pure
ANSWER
Rachel Carson’s famous book “Silent Spring” is related to:
(a) Noise pollution (b) Ecosystem management
(c) Population explosion (d) Pesticide pollution
ANSWER
The UN Conference of Parties on climate change in the year 2011 was held in:
(a) South Africa (b) Peru (c) Qatar (d) Poland
ANSWER
Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?
(a) Reduced Immune System (b) Damage to eyes
(c) Increased liver cancer (d) Increased skin cancer
ANSWER
The UN conference of Parties on climate change in the year 2012 was held at:
(a) Doha (b) Lima (c) Warsaw (d) Durban
ANSWER
A scrubber in the exhaust of a chemical industrial plant removes:
(a) gases like sulphur dioxide
(b) particulate matter of the size 5 micrometer or above
(c) gases like ozone and methane
(d) particulare matter of the size 2.5 micrometer or less
ANSWER
The zone of atmosphere in which the ozone layer is present is called:
(a) Ionosphere (b) Mesosphere (c) Stratosphere (d) Troposphere
ANSWER
Which of these following methods is the most suitable for disposal of nuclear waste?
(1) Shoot the waste into space (2) Bury the waste under Antarctic ice-cover
(3) Dump the waste within rocks under deep ocean
(4) Burry the waste within rocks deep below the Earth’s surface
ANSWER
Which of the following pairs of gases is mainly responsible for green house effect?
(1) Ozone and Ammonia (2) Oxygen and Nitrogen
(3) Nitrogen and Sulphur dioxide (4) Carbon dioxide and Methane
ANSWER
Which of the following protocols did aim for reducing emission of chloroflurocarbons into the atmosphere?
(1) Montreal protocol (2) Kyoto protocol
(3) Gothenburg Protocol (4) Geneva Protocol
ANSWER
Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:
(1) making plastic sacks (2) use as a fertilizer
(3) construction of roads (4) making tubes and pipes
ANSWER
Which of the following statements about ozone is correct?
(1) Tropospheric ozone protects us from UV radiations. (2) Stratospheric ozone is ‘bad’
(3) Tropospheric ozone is ‘good’ (4) Stratospheric ozone protects us from UV radiations.
ANSWER
Which of the following is an innovative remedy for plastic waste?
(1) Burning in the absence of oxygen (2) Burrying 500 m deep below soil surface
(3) Polyblend (4) Electrostatic precipitator
ANSWER
If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face problem of:
(1) Metal toxicity (2) Alkalinity (3) Acidity (4) Salinity
ANSWER
According to Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to humanhealth ?
(1) 3.5 micrometers (2) 2.5 micrometers (3) 4.0 micrometers (4) 3.0 micrometers
ANSWER
Snow-blindness in Antarctic region is due to
1) Damage to retina caused by infrared rays 2) Freezing of fluids in the eye by low temperature
3) Inflammation of cornea due to high dose of UV-B radiation
4) High reflection of light from snow
ANSWER
Montreal protocol was signed in 1987 for control of
1) Disposal of e-wastes 2) Transport Genetically modified organisms
3) Emission of ozone depleting substances 4) Release of Green House gases
ANSWER
Dobson units are used to measure thickness of:
- Stratosphere 2. Ozone 3. Troposphere 4. CFC’s
ANSWER
The device which can remove particulate matter present in the exhaust from a thermal power plant is:
1) STP 2) Incinerator
3) Electrostatic precipitator 4) Catalytic convertor
ANSWER
The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?
1) CNG burns more efficiently than diesel
2) The same diesel engine is used in CNG buses making the cost of conversion low
3) It is cheaper than diesel
4) It can not be adulterated like diesel
ANSWER
Given below are two statements:
Statement I: In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II: Particulate matter (PM 2.5) cannot be removed by scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose the most appropriate answer from the options given below:
1) Both statements I and Statements II are correct
2) Both statement I and Statement II are incorrect
3) Statement I is correct but Statement II is incorrect
4) Statement I is incorrect but Statement II is correct