Forestry MCQs

Option A: Lichens

Option B: Fungi

Option C: Phytoplanktons

Option D: None of the above

Correct Answer: Phytoplanktons ✔

Option A: Anaerobiosis

Option B: Aerobiosis

Option C: Biological magnification

Option D: Psammophytes

Correct Answer: Aerobiosis ✔

Option A: Thermal power plant

Option B: Diesel engine

Option C: Hydroelectric power station

Option D: Pollen grain

Correct Answer: Hydroelectric power station ✔

Option A: Make oxygen molecules unavailable to aquatic life

Option B: Make nitrates unavailable to aquatic life

Option C: Prevent precipitation

Option D: Stop the water cycle

Correct Answer: Make oxygen molecules unavailable to aquatic life ✔

Option A: Eel

Option B: Crab

Option C: Sea gull

Option D: Phytoplanktons

Correct Answer: Sea gull ✔

Option A: Algae

Option B: Sand

Option C: Moss

Option D: Sugar mill effluents

Correct Answer: Sugar mill effluents ✔

Option A: Lithosphere

Option B: Biosphere

Option C: Atmosphere

Option D: Hydrosphere

Correct Answer: Biosphere ✔

Option A: Methaelo binemia

Option B: Minamata

Option C: Foolish disease

Option D: Hepatitis

Correct Answer: Minamata ✔

Option A: Air pollution

Option B: Water pollution

Option C: Soil pollution

Option D: All of these

Correct Answer: Air pollution ✔

Option A: Green house effect

Option B: Radioactive effect

Option C: Ozone layer effect

Option D: Solar effect

Correct Answer: Green house effect ✔

Option A: Nucleus

Option B: All cell membrane system

Option C: Cell wall

Option D: Plasmodesmata

Correct Answer: All cell membrane system ✔

Option A: Ferns and Cycas

Option B: Green algae and aquatic liverworts

Option C: Lichens and mosses

Option D: Neem’ tree and Eichhornia

Correct Answer: Lichens and mosses ✔

Option A: Decay of bodies of aquatic organisms

Option B: Rain

Option C: Growth of phytoplankton

Option D: Industrial effluents

Correct Answer: Industrial effluents ✔

Option A: Alga

Option B: Lichen

Option C: Pinus

Option D: Mustard

Correct Answer: Lichen ✔

Option A: O3

Option B: CO

Option C: CO2

Option D: N2

Correct Answer: CO ✔

Option A: 27 & 73

Option B: 73 & 27

Option C: 37 & 63

Option D: 63 & 37

Correct Answer: 27 & 73 ✔

Option A: Sewage and industrial effluents

Option B: Household detergents and pesticides

Option C: Automobile exhausts and chemicals from industry

Option D: Sewage and pesticides

Correct Answer: Automobile exhausts and chemicals from industry ✔

Option A: Aquatic plants

Option B: Penicillin

Option C: Micro-organisms

Option D: Fishes

Correct Answer: Micro-organisms ✔

Option A: Soil

Option B: Water

Option C: Noise

Option D: Air

Correct Answer: Air ✔

Option A: Smoke

Option B: 2, 4-D and pesticides

Option C: Automobile exhaust

Option D: Aeroplanes

Correct Answer: 2, 4-D and pesticides ✔

Option A: SO2

Option B: CO

Option C: N2O

Option D: O3

Correct Answer: CO ✔

Option A: It decreases CO2 concentration

Option B: It competes O2 to combine with haemoglobin

Option C: It is carcinogenic

Option D: It depletes O3 layer

Correct Answer: It competes O2 to combine with haemoglobin ✔

Option A: Ozone and dust

Option B: NH3 and SO3

Option C: CO and SO3

Option D: NO2 and SO2

Correct Answer: NO2 and SO2 ✔

Option A: Excess CO2

Option B: Excess CO

Option C: Chloro-fluoro-carbon

Option D: Low rainfall

Correct Answer: Chloro-fluoro-carbon ✔

Option A: Malathion

Option B: Aldrin

Option C: Gamma BHC

Option D: None of these

Correct Answer: Aldrin ✔

Option A: CH4, N2, CO2 and NH3

Option B: CO2, O2, NO2 and NH3

Option C: Chloro-fluoro-carbons, CO2, NH3 and N2

Option D: CO2, chloro-fluoro-carbons, CH4 and NO2

Correct Answer: CO2, chloro-fluoro-carbons, CH4 and NO2 ✔

Option A: CO

Option B: SO2

Option C: CO2

Option D: Hydrocarbons

Correct Answer: CO ✔

Option A: Use of refrigerator

Option B: Increased combustion of oil and coal

Option C: Deforestation

Option D: All the above

Correct Answer: All the above ✔

Option A: Has been responsible for increasing the average global temperature in recent

Option B: Is advantageous since it supplies O2 for people travelling in jets

Option C: Hinders higher rate of photosynthesis

Option D: Helps in checking the penetration of ultra violet rays to earth

Correct Answer: Helps in checking the penetration of ultra violet rays to earth ✔

Option A: Montreal Protocol – Global warming

Option B: Ramsar Convention – Ground water pollution

Option C: Kyoto Protocol – Climatic change

Option D: Basal Convention – Biodiversity Conservation

Correct Answer: C. Kyoto Protocol – Climatic change ✔

Option A: Sulphur di-oxide

Option B: Carbon di-oxide

Option C: Nitrogen oxides and fluoro-carbons

Option D: Carbon monoxide

Correct Answer: Nitrogen oxides and fluoro-carbons ✔

Option A: Algae

Option B: Bacteria

Option C: Higher plants

Option D: Man

Correct Answer: Man ✔

Option A: Air only

Option B: Air and soil only

Option C: Air, soil and water

Option D: Air and water only

Correct Answer: Air, soil and water ✔

Option A: Biodegradable pollutant

Option B: Green house gas

Option C: Non-degradable pollutant

Option D: None of the above

Correct Answer: Non-degradable pollutant ✔

Option A: Petiole but not in lamina

Option B: Only mid rib of lamina

Option C: Leaf tip and leaf margin

Option D: Stems tips only

Correct Answer: Leaf tip and leaf margin ✔

Option A: Forest fires

Option B: Green house effect

Option C: Global warming

Option D: Increased incidence of skin cancer

Correct Answer: Increased incidence of skin cancer ✔

Option A: Radiation hazard

Option B: Desertification

Option C: Deforestation

Option D: Gleization

Correct Answer: Radiation hazard ✔

Option A: Man

Option B: Plants

Option C: Animals

Option D: Man and animals

Correct Answer: Man ✔

Option A: Cyperus rotundus

Option B: Eichhornia creassipes

Option C: Parthenium hysterophorus

Option D: Chenopodium album

Correct Answer: ✔

Option A: Sewage treatment

Option B: Manufacturing electricity

Option C: By checking atomic blasts

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Carbon monoxide

Option B: Sulphur dioxide

Option C: Ozone

Option D: Flourides

Correct Answer: Ozone ✔

Option A: SO2

Option B: Fluoro-carbons

Option C: CCI4

Option D: CO

Correct Answer: Fluoro-carbons ✔

Option A: Plastics

Option B: Iron junks

Option C: Detergents

Option D: Glass junks

Correct Answer: Plastics ✔

Option A: The natural geo-chemical cycles

Option B: The natural balance of our environment

Option C: The natural flora of a place

Option D: The natural wildlife of a region

Correct Answer: The natural balance of our environment ✔

Option A: Algae

Option B: Moss

Option C: Ferns

Option D: Distillated wastes

Correct Answer: Algae ✔

Option A: DDT

Option B: Bordeaux mixture

Option C: 2,4-D

Option D: DCMU

Correct Answer: Bordeaux mixture ✔

Option A: Hot water from power plants

Option B: Hot chemicals from industries

Option C: Waste from mines

Option D: Waste from agricultural fields

Correct Answer: Hot water from power plants ✔

Option A: DDT is a growth retardant

Option B: DDT disturbed hormonal balance essential for fruit setting

Option C: DDT killed the pollinating insects along with the pests

Option D: DDT inhibited flowering

Correct Answer: DDT killed the pollinating insects along with the pests ✔

Option A: Automobile exhausts

Option B: Radioactive substances

Option C: Smoke

Option D: All of the above

Correct Answer: All of the above ✔

Option A: SO2

Option B: Fly ash

Option C: CO

Option D: Hydrocarbons

Correct Answer: Fly ash ✔

Option A: Contamination of milk supply is not cumulative

Option B: Infants are more susceptible to radiation

Option C: Susceptibility to radiation increases with age

Option D: Mutated genes are frequently recessive

Correct Answer: Mutated genes are frequently recessive ✔

Option A: Lead

Option B: Cyanides

Option C: Methyl isocyanate

Option D: Mercury

Correct Answer: Mercury ✔

Option A: O2

Option B: O3

Option C: SO2

Option D: N2

Correct Answer: O2 ✔

Option A: Air pollution

Option B: Water pollution

Option C: Noise Pollution

Option D: Radioactive pollution

Correct Answer: Radioactive pollution ✔

Option A: To save the trees from erosion

Option B: To safeguard the fruits from large labour population

Option C: To save the trees from poisonous fumes/smoke from the brick chimneys

Option D: To protect the orchard from the operation of trucks meant for transporting fruits

Correct Answer: To save the trees from poisonous fumes/smoke from the brick chimneys ✔

Option A: Ozone layer in the atmosphere

Option B: Infra-red radiations

Option C: Moisture in the atmosphere

Option D: CO2 in the atmosphere

Correct Answer: CO2 in the atmosphere ✔

Option A: Chlorine/NO2

Option B: SO2

Option C: Oxygen/ozone

Option D: Hydrocarbons

Correct Answer: SO2 ✔

Option A: Increases

Option B: Slightly decreases

Option C: Remains unchanged

Option D: Decreases drastically

Correct Answer: Increases ✔

Option A: Linear alkyl sulphonate

Option B: Sulphates and phosphate

Option C: Alkyl benzenes sulphonate

Option D: None of these

Correct Answer: Alkyl benzenes sulphonate ✔

Option A: Most probable number

Option B: Millions per night

Option C: Millennium of probable number

Option D: None of these

Correct Answer: Most probable number ✔

Option A: DDT is a growth retardant

Option B: Pesticides

Option C: Minerals

Option D: Carbon deposit

Correct Answer: Minerals ✔

Option A: Air pollution

Option B: Soil pollution

Option C: Water pollution

Option D: All of the above

Correct Answer: Water pollution ✔

Option A: Chlorine

Option B: Chloramines

Option C: Phenyl

Option D: Ozone

Correct Answer: Phenyl ✔

Option A: Sewage

Option B: Asbestos

Option C: Plastic

Option D: All of these

Correct Answer: Sewage ✔

Option A: Grease

Option B: Asbestos

Option C: Eichhornia roots

Option D: ABS micelle

Correct Answer: Asbestos ✔

Option A: Decreases

Option B: Increases

Option C: Remains the same

Option D: Is no measure of pollution

Correct Answer: Increases ✔

Option A: Mineralization

Option B: Oligotrophication

Option C: Eutrophication

Option D: All of these

Correct Answer: Eutrophication ✔

Option A: Aldrin

Option B: Lindane

Option C: Chlordane

Option D: Chloremphenicol

Correct Answer: Chloremphenicol ✔

Option A: PAN

Option B: 2,4,5-T

Option C: 2,4-D

Option D: DDT

Correct Answer: DDT ✔

Option A: BOD much higher than COD

Option B: BOD slightly higher than COD

Option C: COD slightly higher than BOD

Option D: COD much higher than BOD

Correct Answer: COD much higher than BOD ✔

Option A: Caesium oxide deposition

Option B: Control of diesel

Option C: Chemistry of depositions

Option D: Chemical oxygen demand

Correct Answer: Chemical oxygen demand ✔

Option A: Thousands

Option B: Hundreds

Option C: Billion

Option D: Millions

Correct Answer: Billion ✔

Option A: Acidity

Option B: Metal toxicity

Option C: Aridity

Option D: Salinity

Correct Answer: Salinity ✔

Option A: Always an unfavourble alteration

Option B: Always a favourable change

Option C: Rarely a favoruable alteration

Option D: Usually an unfavourable change

Correct Answer: Always an unfavourble alteration ✔

Option A: Gamma rays (from cobalt 60)

Option B: X-rays

Option C: UV (260 nm)

Option D: Alpha particles

Correct Answer: Gamma rays (from cobalt 60) ✔

Option A: 89%

Option B: 93%

Option C: 97%

Option D: 86%

Correct Answer: 86% ✔

Option A: Production of cereals

Option B: Trapping of UV rays

Option C: Cooling of earth

Option D: Warming of earth

Correct Answer: Warming of earth ✔

Option A: Peroxy acetyl nitrate

Option B: Peroxy acyl nitrite

Option C: Pyridine aceto-nitrite

Option D: Peroxy aceto-nitrile

Correct Answer: Peroxy acetyl nitrate ✔

Option A: Industrial waste

Option B: Oil spills

Option C: Death of marine fauna

Option D: None of these

Correct Answer: Oil spills ✔

Option A: Ethylene

Option B: 3.4 Benzpyrene

Option C: N2O

Option D: PAN

Correct Answer: 3.4 Benzpyrene ✔

Option A: Reverse osmosis

Option B: Electrodialysis

Option C: Both (a) & (b)

Option D: None of these

Correct Answer: Both (a) & (b) ✔

Option A: Jet air crafts only

Option B: Fire extinguishers and jet air crafts

Option C: Refrigerators and jet air crafts

Option D: All of these

Correct Answer: All of these ✔

Option A: Mesopause

Option B: Tropopause

Option C: Stratopause

Option D: All of these

Correct Answer: Tropopause ✔

Option A: Phosphene

Option B: Nitrogen

Option C: Hydrogen

Option D: Nerve gas VX

Correct Answer: Nerve gas VX ✔

Option A: Los Angeles type smog

Option B: New York type smog

Option C: Tokyo type smog

Option D: California type smog

Correct Answer: Los Angeles type smog ✔

Option A: Melting of polar ice

Option B: Destruction of phytoplanktons

Option C: Inundation of coastal towns

Option D: Increase in productivity

Correct Answer: Melting of polar ice ✔

Option A: Hydrocarbons only

Option B: Hydrocarbons and SO2

Option C: Hydrocarbons and N2O

Option D: Particulate matter and SO2

Correct Answer: Particulate matter and SO2 ✔

Option A: Calcium salts

Option B: Cobalt salts

Option C: Silicon oil

Option D: Barium salts

Correct Answer: Barium salts ✔

Option A: In the mid day

Option B: At night

Option C: In early morning

Option D: At evening

Correct Answer: In the mid day ✔

Option A: Tanneries

Option B: Paper factories

Option C: Chemical factories

Option D: Sugar mills

Correct Answer: Chemical factories ✔

Option A: Glycolysis

Option B: ATP synthesis

Option C: CO2 fixation

Option D: Hill reaction

Correct Answer: Hill reaction ✔

Option A: USA/Korea

Option B: Russia

Option C: China

Option D: Japan

Correct Answer: Japan ✔

Option A: Ozone

Option B: N2O

Option C: Ethylene

Option D: PAN

Correct Answer: Ozone ✔

Option A: Troposphere

Option B: Stratosphere

Option C: Homosphere

Option D: Heterosphere

Correct Answer: Troposphere ✔

Option A: 245 ppm

Option B: 275 ppm

Option C: 215 ppm

Option D: 230 ppm

Correct Answer: 275 ppm ✔

Option A: Troposphere

Option B: Stratosphere

Option C: Mesosphere

Option D: Thermosphere

Correct Answer: Troposphere ✔

Option A: 400 ppm

Option B: 500 ppm

Option C: 475 ppm

Option D: 450 ppm

Correct Answer: 450 ppm ✔

Option A: 1885

Option B: 1895

Option C: 1905

Option D: 1910

Correct Answer: 1905 ✔

Option A: Growth of organism due to food consumption

Option B: Increase in population size

Option C: Blowing up of environmental issues by man

Option D: Increase in the concentration of non-degradable pollutants as they pass through food chain

Correct Answer: Increase in the concentration of non-degradable pollutants as they pass through food chain ✔

Option A: 1933

Option B: 1943

Option C: 1953

Option D: 1963

Correct Answer: 1943 ✔