Forestry MCQs

Option A: CFC, CH4 and SO2

Option B: Sulphates of Na, Ca and Fe

Option C: Fly ash

Option D: All of these

Correct Answer: Fly ash ✔

Option A: Photochemical smog

Option B: Dry acid deposition

Option C: Industrial smog

Option D: Wet acid deposition

Correct Answer: Dry acid deposition ✔

Option A: Degradation of marble due to high temperature

Option B: Air pollution released from oil refinery

Option C: Riparian erosion

Option D: Discharge of industrial waste in Yamuna river

Correct Answer: Air pollution released from oil refinery ✔

Option A: Shock waves

Option B: Noise of traffic

Option C: Noise of siren

Option D: Unhearable sound

Correct Answer: Shock waves ✔

Option A: Chlorides

Option B: Cyanides

Option C: Fluorides

Option D: Nitrates

Correct Answer: Nitrates ✔

Option A: One test every 20th day

Option B: One test every 13th day

Option C: One test every 11th day

Option D: One test every 9th day

Correct Answer: One test every 9th day ✔

Option A: Riccinus communis

Option B: Iberis amara

Option C: Cynodon dactylon

Option D: All of these

Correct Answer: Riccinus communis ✔

Option A: Sr90, I131

Option B: Cr51, Cu64

Option C: Zr95, Mn54

Option D: All of these

Correct Answer: Sr90, I131 ✔

Option A: Eichhornia crassipes

Option B: Escherichia coli

Option C: Entamoeba histolytica

Option D: Lemna pancicostata

Correct Answer: Escherichia coli ✔

Option A: Kidneys

Option B: Thyroid

Option C: Bones

Option D: Muscles

Correct Answer: Bones ✔

Option A: 35-45 db

Option B: 1-5 db

Option C: 40-60 db

Option D: 65-75 db

Correct Answer: 35-45 db ✔

Option A: 120 db

Option B: 150 db

Option C: 180 db

Option D: 240 db

Correct Answer: 180 db ✔

Option A: Cyanides and phenols

Option B: Chlorides and fluorides

Option C: Carbonates and sulphides

Option D: Bicarbonates and chlorides

Correct Answer: Cyanides and phenols ✔

Option A: 120-170 db

Option B: 90-160 db

Option C: 100-130 db

Option D: 100-160 db

Correct Answer: 100-160 db ✔

Option A: Barium

Option B: Cadmium

Option C: Iron

Option D: Mercury

Correct Answer: Cadmium ✔

Option A: Traffic on high ways

Option B: Sirens of every kind

Option C: Air traffic directions

Option D: Noise producing devices

Correct Answer: Air traffic directions ✔

Option A: Ocimum basilicum

Option B: Azadirachta indica

Option C: Both (a) & (b)

Option D: Dalbergia sissoo

Correct Answer: Both (a) & (b) ✔

Option A: Jun-44

Option B: Sep-44

Option C: Jul-45

Option D: Aug-45

Correct Answer: Jul-45 ✔

Option A: Traffic sirens

Option B: Sirens and loud speakers

Option C: Kitchen appliances, radio and TV

Option D: Industries

Correct Answer: Kitchen appliances, radio and TV ✔

Option A: Soil only

Option B: Soil and water both

Option C: Air and water both

Option D: Air, soil and water

Correct Answer: Air, soil and water ✔

Option A: Ethane

Option B: Methane

Option C: Butane

Option D: Ammonia

Correct Answer: Methane ✔

Option A: Drying of the lake very soon due to algal bloom

Option B: An increased production of fish due to lot of nutrients

Option C: Increased population of aquatic food web organisms

Option D: Death of fish due to lack of oxygen

Correct Answer: Death of fish due to lack of oxygen ✔

Option A: August, 8th

Option B: August, 9th

Option C: August, 6th

Option D: August, 4th

Correct Answer: August, 6th ✔

Option A: Chernobyl

Option B: TMI-2

Option C: Narora

Option D: Trombay

Correct Answer: TMI-2 ✔

Option A: 0.01 ppm

Option B: 0.001 ppm

Option C: 0.5 ppm

Option D: 0.75 ppm

Correct Answer: 0.01 ppm ✔

Option A: 2 km

Option B: 4 km

Option C: 8 km

Option D: 10 km

Correct Answer: 2 km ✔

Option A: C16

Option B: C18

Option C: Both (a) & (b)

Option D: C10

Correct Answer: Both (a) & (b) ✔

Option A: Geneva

Option B: Islamabad

Option C: Sydney

Option D: Rio-de-Janeiro

Correct Answer: Rio-de-Janeiro ✔

Option A: 10-15%

Option B: 15-20%

Option C: 20-25%

Option D: 2-5%

Correct Answer: 10-15% ✔

Option A: Gaseous

Option B: Mainly gaseous

Option C: Non-gaseous

Option D: Mainly non-gaseous

Correct Answer: Non-gaseous ✔

Option A: Phosphene

Option B: SiF4

Option C: Dust

Option D: Halogens

Correct Answer: SiF4 ✔

Option A: Pb, Hg, Cr, Cd

Option B: P,Mn,B,Mg

Option C: N,K,Mo

Option D: Zn,Mo,Mg,Ag

Correct Answer: Pb, Hg, Cr, Cd ✔

Option A: Cell membranes

Option B: DNA

Option C: Mitochondria and ribosomes

Option D: Nucleus

Correct Answer: DNA ✔

Option A: SO2

Option B: CO

Option C: CO2

Option D: NO2

Correct Answer: CO ✔

Option A: Stockholm

Option B: Paris

Option C: London

Option D: Tokyo

Correct Answer: Stockholm ✔

Option A: CO

Option B: SO2

Option C: O2

Option D: NO

Correct Answer: NO ✔

Option A: Sewage

Option B: Plastic

Option C: Polythene

Option D: DDT

Correct Answer: Sewage ✔

Option A: Smoke filters

Option B: Ringelmann’s charts

Option C: Horizontal microscopes

Option D: All of these

Correct Answer: B. Ringelmann’s charts ✔

Option A: SO2 and SO3

Option B: SO2 and oxides of nitrogen

Option C: Hydrocarbons and N2O

Option D: Suspended particulate matter

Correct Answer: Suspended particulate matter ✔

Option A: Tansley

Option B: Odum

Option C: Clements

Option D: Des Voeux

Correct Answer: Des Voeux ✔

Option A: Paris

Option B: London

Option C: Tokyo

Option D: New York

Correct Answer: London ✔

Option A: Minamata disease

Option B: Osteosclerosis

Option C: Bright’s disease

Option D: Hashimoto disease

Correct Answer: Minamata disease ✔

Option A: same as present

Option B: Less than the present

Option C: Higher than the present

Option D: Dependent on the amount of O2 in the atmosphere

Correct Answer: Less than the present ✔

Option A: Burning of fossil fuel

Option B: Thermal power plants

Option C: Sewage

Option D: Suspended particles

Correct Answer: Burning of fossil fuel ✔

Option A: High

Option B: Low

Option C: Same

Option D: None of these

Correct Answer: High ✔

Option A: Its cost of production is high

Option B: It is not rapidly degraded in nature

Option C: Organisms at once developed resistance to it

Option D: It is significantly less effective than other pesticides

Correct Answer: It is not rapidly degraded in nature ✔

Option A: The development of resistant pest varieties

Option B: Simplification of food web

Option C: Reduction in population of useful birds

Option D: Increase in weed population

Correct Answer: The development of resistant pest varieties ✔

Option A: By changing O2 into CO

Option B: By destroying the haemoglobin

Option C: By forming a stable compound with haemoglobin

Option D: By obstructing the reaction of O2 with haemoglobin

Correct Answer: By forming a stable compound with haemoglobin ✔

Option A: It gives off a bad small

Option B: It removes the food eaten by fishes

Option C: It increases the competition with fishes for dissolved oxygen

Option D: Excessive CO2 is added to water

Correct Answer: It increases the competition with fishes for dissolved oxygen ✔

Option A: Natural balance of our ecological environment

Option B: Natural gaseous cycle

Option C: Natural geochemical cycle

Option D: Natural flora of a place

Correct Answer: Natural balance of our ecological environment ✔

Option A: They treat the polluted water

Option B: They act as bio-indicators of pollution

Option C: They promote pollution

Option D: Lichens are not related with pollution

Correct Answer: They act as bio-indicators of pollution ✔

Option A: Sea food containing lot of cadmium

Option B: Fish contaminated with mercury

Option C: Oysters with lot of pesticide

Option D: Sea food contaminated with selenium

Correct Answer: Fish contaminated with mercury ✔

Option A: Mosses

Option B: Liver worts

Option C: Lichens

Option D: Ferns

Correct Answer: Lichens ✔

Option A: Fishes

Option B: Birds

Option C: Zooplanktons

Option D: Phytoplanktons

Correct Answer: Fishes ✔

Option A: 20 times

Option B: 100 times

Option C: 2 times

Option D: 200 times

Correct Answer: 200 times ✔

Option A: Pathogens

Option B: Pheromones

Option C: Insect repellant

Option D: Insect hormone analogue

Correct Answer: Insect hormone analogue ✔

Option A: Biogas generation

Option B: Biological oxygen demand

Option C: Biosynthetic path way

Option D: Fermentation

Correct Answer: Biological oxygen demand ✔

Option A: O3 layer

Option B: SO2 layer

Option C: O2 Layer

Option D: CO2 layer

Correct Answer: O3 layer ✔

Option A: Cooling of earth

Option B: Trapping UV rays

Option C: Production of cereals

Option D: warming of earth

Correct Answer: warming of earth ✔

Option A: It reacts with O2

Option B: It inhibits glycolysis

Option C: Reacts with haemoglobin

Option D: Makes nervous system inactive

Correct Answer: Reacts with haemoglobin ✔

Option A: Industries

Option B: Automobiles

Option C: Home fuel

Option D: Trees

Correct Answer: Automobiles ✔

Option A: P32

Option B: Sr90

Option C: Cs137

Option D: I131

Correct Answer: Sr90 ✔

Option A: Arsine

Option B: SO2

Option C: NH3

Option D: N2O

Correct Answer: N2O ✔

Option A: Russia

Option B: USA

Option C: Brazil

Option D: Germany

Correct Answer: USA ✔

Option A: Dogs

Option B: Pigs

Option C: Cats

Option D: Rabbits

Correct Answer: Rabbits ✔

Option A: CCI4

Option B: SO2

Option C: CO

Option D: Fluoro-carbon

Correct Answer: Fluoro-carbon ✔

Option A: SO2

Option B: O2

Option C: H2S

Option D: CO

Correct Answer: SO2 ✔

Option A: CO

Option B: CO2

Option C: PAN

Option D: Aerosol

Correct Answer: PAN ✔

Option A: Increases oxygenation

Option B: Decreases turbidity

Option C: Increases turbidity deoxygenation

Option D: Increases photosynthesis

Correct Answer: Increases turbidity deoxygenation ✔

Option A: More

Option B: Less

Option C: Equal

Option D: Somewhere more somewhere less

Correct Answer: More ✔

Option A: Phosphate rock only

Option B: Agricultural fertilizers only

Option C: Sewage and phosphate rock

Option D: Sewage and agricultural fertilizers

Correct Answer: Sewage and agricultural fertilizers ✔

Option A: Beggiota

Option B: Chlorella

Option C: Azospirillium

Option D: Escherichia

Correct Answer: Escherichia ✔

Option A: Soil and water

Option B: Air and soil

Option C: Crops and air

Option D: Air and water

Correct Answer: Air and soil ✔

Option A: China

Option B: Antarctica

Option C: Europe

Option D: Africa

Correct Answer: Antarctica ✔

Option A: Refinery

Option B: Distillary

Option C: Textile mill

Option D: Paper mill

Correct Answer: Refinery ✔

Option A: Leaves

Option B: Flowers

Option C: Stems

Option D: Roots

Correct Answer: Leaves ✔

Option A: Water

Option B: Air

Option C: Noise

Option D: Soil

Correct Answer: Air ✔

Option A: Biopollutants

Option B: Ozone layer

Option C: Nuclear blast

Option D: Deforestation

Correct Answer: Ozone layer ✔

Option A: Pollutants in air

Option B: Use of detergents

Option C: Water pollution

Option D: Depletion of O3 layer

Correct Answer: Depletion of O3 layer ✔

Option A: Biotic oxygen deduction

Option B: Base of degradation

Option C: Biotic oxide demand

Option D: Biological oxygen demand

Correct Answer: Biological oxygen demand ✔

Option A: Cadmium

Option B: Zinc

Option C: Lead

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Decreasing O2

Option B: Reducing photosynthesis

Option C: Competing with CO2

Option D: Being toxic to chloroplasts

Correct Answer: Competing with CO2 ✔

Option A: River is polluted

Option B: River is not polluted

Option C: River is day

Option D: None of these

Correct Answer: River is polluted ✔

Option A: CO2

Option B: SO2

Option C: H2

Option D: CO

Correct Answer: H2 ✔

Option A: Hole in ozone layer

Option B: Decrease in the ozone layer in troposphere

Option C: Decrease in thickness of ozone layer in stratosphere

Option D: Increase in the thickness of ozone layer in troposphere

Correct Answer: Decrease in thickness of ozone layer in stratosphere ✔

Option A: CO

Option B: CO2

Option C: C

Option D: SO2

Correct Answer: CO ✔

Option A: Present in water

Option B: Utilized by organisms in water

Option C: Utilized by micro-organisms for decomposition

Option D: Demanded by the producers for the production of food

Correct Answer: Utilized by micro-organisms for decomposition ✔

Option A: DDT

Option B: Aluminum foil

Option C: Domestic wastes

Option D: Mercury slats

Correct Answer: Domestic wastes ✔

Option A: Organic matter

Option B: Microbes

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Soil pollutant

Option B: Water pollutant

Option C: Air pollutant

Option D: Noise pollutant

Correct Answer: Air pollutant ✔

Option A: Caused by CO2 only

Option B: Caused by CH4, SO2, NO2 gases

Option C: Caused by those gases which absorb the infra-red light reflecting from earth

Option D: Caused by combination of many gases

Correct Answer: Caused by CO2 only ✔

Option A: Acid rain

Option B: Smog

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Ammonia

Option B: Phytoplankton

Option C: Industrial effluents

Option D: Smoke

Correct Answer: Industrial effluents ✔

Option A: CO

Option B: CO2

Option C: NO2

Option D: PO4

Correct Answer: CO ✔

Option A: Hardness of water

Option B: Industrial pollution

Option C: Sewage pollution

Option D: Presence of chlorine in water

Correct Answer: Sewage pollution ✔

Option A: 10-20 dB

Option B: 40-60 dB

Option C: 90-12 dB

Option D: 120-150 dB

Correct Answer: 40-60 dB ✔

Option A: Global warming

Option B: Acid rain

Option C: Greenhouse effect

Option D: The UV radiations reach the earth

Correct Answer: The UV radiations reach the earth ✔

Option A: Hg

Option B: Cd

Option C: Pb

Option D: Cu

Correct Answer: Pb ✔

Option A: Sulphur di-oxide

Option B: Carbon di-oxide

Option C: Chloro-fluoro-carbon

Option D: Smog

Correct Answer: Chloro-fluoro-carbon ✔

Option A: Very costly

Option B: Not available

Option C: Inflammable

Option D: Not degraded easily

Correct Answer: Not degraded easily ✔