Environmental Studies MCQs
What percentage of India’s current energy production is made up of renewable sources?
(a). _ 20%
(b). ~ 2 – 3%
(c). ~ 11 – 12%
(d). ~ 25 – 30%
Answer: 11–12%
How much carbon would be present in the atmosphere at the current CO2 concentration of 392 ppm if it were all at standard pressure and temperature?
(a). ~ 415 Gt
(b). ~ 1245 Gt
(c). ~ 831 Gt
(d). ~ 1620 Gt
Answer: 831 Gt
Environmental Impact Assessment and Risk Assessment are distinct in terms of?
(a). Probability expression
(b). Disaster management
(c). Hazard identification
(d). Considerationof human environment
Answer: Probability expression
One or more chemical elements or molecules pass through the biogeochemical cycle.?
(a). viosphere,lithosphere, atmosphere and hydrosphere
(b). biosphere, lithosphere and atmosphere
(c). biosphere and lithosphere
(d). Lithosphere and atmosphere
Answer: Biosphere,lithosphere, atmosphere and hydrosphere
We refer to low-high tides as?
(a).bigean tide
(b) Neap tide
(c). Perigean tide
(d).Spring tide
Answer: Neap tide
According to the Indian EIA Notification 2006, which type of projects are exempt from the need for environmental impact assessments?
(a).Category B2
(b).bategory B1
(c).category A
(d).None of these
Answer: Category B2
Environmental Protection Act was enacted in India during
(a). 1994
(b). 1984
(c).1986
(d).1987
Answer: 1986
Incinerators should have a minimum stock height of?
(a).30 m
(b).15 m
(c).10 m
(d).60 m
Answer:30 m
Reliable, quantitative and verifiable data used in Environmental Impact Assessment study are called?
(a). Discrete data
(b). Soft data
(c). Continuous data
(d). Hard data
Answer: Hard data
The year saw the implementation of the fundamental convention on the transboundary movement of hazardous waste?
(a). 1969
(b). 1989
(c). 1979
(d). 1999
Answer: 1989
The best soil type for agriculture is?
(a). Podozols
(b). Serpent soil
(c). Latosols
(d). Solonachak
Answer: Latosols
A population from whom samples are taken is referred to as?
(a). Total population
(b). Accessible population
(c). Target population
(d). Universal population
Answer:Accessible population
What area of the atmosphere conserves momentum, heat flow, and moisture content?
(a). Troposphere
(b) Mesosphere
(c). Surface Boundary Layer
(d). Stratosphere
Answer: Surface Boundary Layer
The occurrences A and B cannot both occur. What is P(A & B) if P(A) = 0.5 and P(B) = 0.2?
(a). 0.5
(b).0.3
(c). 0.7
(d).0.1
Answer:0.1
Which of the following beach types is not regarded as a significant type?
(a). Cliffy shore
(b). Shore at Layey
(C) Clayey shore
(d)Darren Shore
Solution: Clayey shore
What percentage of India’s current energy production is made up of renewable sources?
(a). _ 20%
(b). ~ 2 – 3%
(c). ~ 11 – 12%
(d). ~ 25 – 30%
Answer: 11–12%
How much carbon would be present in the atmosphere at the current CO2 concentration of 392 ppm if it were all at standard pressure and temperature?
(a). ~ 415 Gt
(b). ~ 1245 Gt
(c). ~ 831 Gt
(d). ~ 1620 Gt
Answer: 831 Gt
Environmental Impact Assessment and Risk Assessment are distinct in terms of?
(a). Probability expression
(b). Disaster management
(c). Hazard identification
(d). Considerationof human environment
Answer: Probability expression
One or more chemical elements or molecules pass through the biogeochemical cycle.?
(a). viosphere,lithosphere, atmosphere and hydrosphere
(b). biosphere, lithosphere and atmosphere
(c). biosphere and lithosphere
(d). Lithosphere and atmosphere
Answer: Biosphere,lithosphere, atmosphere and hydrosphere
We refer to low-high tides as?
(a).bigean tide
(b) Neap tide
(c). Perigean tide
(d).Spring tide
Answer: Neap tide
According to the Indian EIA Notification 2006, which type of projects are exempt from the need for environmental impact assessments?
(a).Category B2
(b).bategory B1
(c).category A
(d).None of these
Answer: Category B2
Environmental Protection Act was enacted in India during.?
(a). 1994
(b). 1984
(c).1986
(d).1987
Answer: 1986
Incinerators should have a minimum stock height of?
(a).30 m
(b).15 m
(c).10 m
(d).60 m
Answer:30 m
Reliable, quantitative and verifiable data used in Environmental Impact Assessment study are called.?
(a). Discrete data
(b). Soft data
(c). Continuous data
(d). Hard data
Answer: Hard data
The year saw the implementation of the fundamental convention on the transboundary movement of hazardous waste.?
(a). 1969
(b). 1989
(c). 1979
(d). 1999
Answer: 1989
The best soil type for agriculture is?
(a). Podozols
(b). Serpent soil
(c). Latosols
(d). Solonachak
Answer: Latosols
A population from whom samples are taken is referred to as?
(a). Total population
(b). Accessible population
(c). Target population
(d). Universal population
Answer:Accessible population
What area of the atmosphere conserves momentum, heat flow, and moisture content?
(a). Troposphere
(b) Mesosphere
(c). Surface Boundary Layer
(d). Stratosphere
Answer: Surface Boundary Layer
The occurrences A and B cannot both occur. What is P(A & B) if P(A) = 0.5 and P(B) = 0.2?
(a). 0.5
(b).0.3
(c). 0.7
(d).0.1
Answer:0.1
In general, the ionic species O+, O2+, and N2+ are present in.?
(a). Troposphere
(b). Heterosphere
(c). Mesosphere
(d). Stratosphere
Answer: Heterosphere
India will begin phasing out synthetic hydrofluorocarbons (HFCs) in the year as part of a recently struck international accord.?
(a). 2019
(b). 2028
(c). 2024
(d). 2032
Answer: 2028
from the following, pick the true statement.?
(a). In ‘J’ shaped growth curve, a relatively un-restricted growth suddenly halt only due to diapause.
(b). In ‘J’ form of population growth, the equilibrium level is not imposed by environmental factors
(c). All population growth forms are independent of environment.
(d). The upper asymptote of the sigmoid curve of a population represents carrying capacity
Answer: The upper asymptote of the sigmoid curve of a population represents carrying capacity
BOD/COD ratio for untreated municipal wastewater is in the range.?
(a). 1.3 – 3
(b). 3.0 – 6.5
(c). .3 – 0.8
(d). > 10
Answer: 0.3 – 0.8
Mercury poses a special threat to human health because.?
(a). As a pure metal it is soluble in water, hence can easily be absorbed through drinking water.
(b). It bioaccumulate high up in the food chain.
(c).It is light and volatile and so is widely dispersed through the environment
(d). It can cause serious impact by physical contact.
Answer: It bioaccumulate high up in the food chain.
Determine the proper order for atmospheric residence times.?
(a). NOx > CF4 > CH3Br > CH3
(b). CF4 > NOx > CH4 > CH3Br
(c). CH3Br > NOx > CH3 > CH4
(d).CH3 > CH3Br > CF4 > NOx
Answer: CF4 > NOx > CH4 > CH3Br
In the regions over, the surface winds often come from the east.?
(a). 6 μg/LHigh latitudinal zone
(b). Midlatitudinal zone
(c). Tropical Equator zone
(d). Subtropical zone
Answer: Tropical Equator zone
The time period (epoch) connected to human intervention with nature is known as.?
(a). Anthropocene
(b). Miocene
(c). Eocene
(d). Holocene
Answer: Anthropocen
Which of the following power plants, while running normally, discharges toxic metals like lead and arsenic as well as radioactive materials.?
(a). Nuclear power plant
(b). Coal based thermal power plants
(c). Hydro power
(d). Solar power installations
Answer: Coal based thermal power plants
The harmonic mean of the number 5, 10 and 20 is.?
(a). ~ 2.51
(b). ~ 8.57
(c). ~ 6.25
(d). ~ 2.857
Answer: ~ 8.57
The easiest way to explain the trophic relationship between any number of species.?
(a). Generalized Lotka-Volterra equation
(b). Lefkovitch matrix
(c). Leslies matrix model
(d). Box model
Answer: Generalized Lotka-Volterra equation
When a solar pond has a salt gradient, how does the salinity typically change from top to bottom.?
(A). < 5% to ~ 20%
(B). ~ 10% to ~ 30%
(C). ~ 20% to ~ 35%
(D) ~ 20% to ~ 40%
Answer: < 5% to ~ 20%
Which of the following chemical species does not function as a catalyst in the reaction sequence leading to tropospheric ozone formation.?
(a). O2
(b). HO2
(c). NO2
(d). OH
Answer: O2
Six earthworms were utilised in the experiment, and their respective lengths are 5.37, 5.11, 6.42, 7.26, 3.99, and 2.6 cm. Accordingly, the corresponding weights (g) are 5.88, 6.35, 8.11, 8.36, 4.40, and 3.5. The earthworms’ weight and length have a linear connection.?
(a). non-correlated
(b). +vely correlated
(c). –vely correlated
(d). insignificantly correlated
Answer: +vely correlated
The geometric mean of 1, 4, and 16 is as follows.?
(a). 4
(b). 3
(c). 6
(d). 2
Answer: 4
The Public Liability Insurance Act of 1991 specifies that a request for relief is investigated by.?
(a). Collector
(b). Session Judge
(c). C.E.O.
(d). Police Commissioner
Answer: Collector
It is known as the settling of discrete, non-flocculating particles in a diluted suspension.?
(a). Class-I sedimentation
(b). Class-III sedimentation
(c). Class-II sedimentation
(d). Compression
Answer: Class-I sedimentation
Theoretically, a 500 mg/L phenol solution will have an oxygen requirement of.?
(a). 298 mg/L
(b). 596 mg/L
(c). 1191 mg/L
(d). 2382 mg/L
Answer: 1191 mg/L
A water sample was examined by a local laboratory, which found that it had a conductivity of 112 S/cm and a total solids content (TS) of 132 mg/L. The amount of total suspended solids (TSS) in water will be (mg/L).
(a). ~ 57
(b). ~ 120
(c). ~ 32
(d). ~75
Answer: ~ 57
IS is used in research.?
(a). View shed analysis
(b). All of these
(c). Wildlife habitat analysis and migration routes planning
(d). Environmental Impact Assessment
Answer: All of these
Water removal of the top, productive soil is referred to.?
(a). Soil erosion
(b). Siltation
(c). Weathering of soil
(d). Leaching
Answer: Soil erosion
One instance of this is the development of genetic resistance to drugs in disease-causing microorganisms.?
(a). Diversifying natural selection
(b). Stabilizing natural selection
(c). Directional natural selection
(d). Convergent natural selection
Answer: Directional natural selection
It has been determined that the KOM for the substance p-dichlorobenze is 625. The distribution coefficient (Kd) for a soil with 1.6% organic matter will be.?
(a). 2
(b). 10
(c) .5
(d).20
Answer: 10
What is the 131I half-life?
(a). 60 days
(b). 12 years
(c). 8 days
(d). 30 days
Answer: 8 days
The keystone predator species help to keep a community’s variety.?
(a).coevolving with their prey
(b). allowing immigration of other predators
(c). competitively excluding other predators
(d). preying on community’s dominant species
Answer: preying on community’s dominant species
Important areas of include the chaparral, maquis, encinous, and Melleseab.?
(a). Tropical evergreen woodland
(b). Temperate evergreen woodland
(c). Tropical deciduous woodland
(d). Temperate deciduous woodland
Answer: Tropical evergreen woodland
cause of pulmonary oedema.?
(a). Nitrous oxide
(b). Sulphur dioxide
(c). Carbon monoxide
(d). Methane
Answer: Nitrous oxide
Which food chain in the list below is correct?
(a). Turtle → Crab → Zooplankton → Phytoplankton
(b). Phytoplankton → Zooplankton → Crab → Turtle
(c). phytoplankton → Zooplankton → Turtle → Crabs
(d). Zooplankton → Turtle → Crab → Phytoplankton
Answer: Phytoplankton → Zooplankton → Crab → Turtle
Which of the following is not regarded as an ecosystem’s internal factor.?
(a). Decomposition
(b). Bedrock
(c). Root competition
(d). Succession
Answer: Bedrock
Freshwater ecosystems are restricted in terms of nutrition by.?
(a).Phosphorous and Carbon
(b). Phosphorous and Iron
(c). Iron and Nitrogen
(d). Nitrogen and Calcium
Answer: Phosphorous and Iron
Which of the following does not control an ecosystem externally.?
(a). Microbes
(b). Topography
(c). Parent material forming soil
(d). Climate
Answer: Microbes
Which of the following does not constitute an external force influencing an ecosystem.?
(a). Allen’s law
(b). Doll’s rule
(c).Gause hypothesis
(d). Weismann’s theory
Answer: Gause hypothesis
The term “Threshold of Security” describes the level of population at which.?
(a).barasites damage the host body but do not cause immediate mortality
(b). Functional Answer of the predator is very high
(c). predators no longer find it profitable to hunt for the prey species.
(d). The balance between parasite and host is disturbed as the host produces antibodies.
Answer: Predators no longer find it profitable to hunt for the prey species.
Which of the following materials is difficult to deconstruct.?
(a). Chitin
(b). Hemicellulose
(c). Cellulose
(d). Amino acids
Answer: Chitin
The manifestation of tectonic control in landscape evolution is.?
(a). Alluvial forms
(b). Tilted river terraces
(c). Increased boulder proportions in the river belt
(d). River meandering
Answer: Tilted river terraces
Pleistocene is the name of a.?
(a). Cold climate
(b). Alteration of cold and warm climate with high proportion of cold period
(c). Warm climate
(d). Alteration of cold and warm climate with very high proportion of warm period
Answer: Alteration of cold and warm climate with high proportion of cold period
There is a distinguishing feature between the two polar ice caps.?
(a). Arctic Ice Cap is on land
(b). Antarctic Ice Cap is on land
(c). Both are on land but Antarctic Ice Cap is thicker
(d). Both are on sea but Arctic Ice Cap is thicker
Answer: Antarctic Ice Cap is on land
A rise in sea level of is anticipated to be covered by polar ice melting.?
(a).100 metre
(b). 60 metre
(c).20 metre
(d). 10 metre
Answer: 60 metre
Which of the following categories of earthworms is best for reclaiming wastelands.?
(a).Endogeic
(b). Anecic
(c). Epigeic
(d). None of these
Answer: Epigeic
Laterite stands for.?
(a). Red soil
(b). Glacial soil
(c). Black cotton soil
(d). Regolith soil
Answer: Regolith soil
The earth’s crust is made up of the following elements, listed in order of decreasing weight percentage.?
(a). Iron > Calcium > Silicon > Aluminium
(b). Aluminium > Iron > Calcium > Silicon
(c). Silicon > Aluminium > Iron > Calcium
(d). Calcium > Silicon > Aluminium > Iron
Answer: Silicon > Aluminium > Iron > Calcium
The weight percent criterion for separating main and trace elements in a whole-rock chemical analysis is.?
(a). 1 %
(b).0.001 %
(c). 0.01 %
(d). 0.1 %
Answer: 0.1 %
Most resistant to chemical weathering is the mineral.?
(a). Olivine
(b).K-feldspar
(c). Quartz
(d). Biotite
Answer: Quartz
parasites that trigger the host’s development of antibodies are referred to as.?
(a). Pathogenic parasites
(b). parasites
(c). Zooparasites
(d). Homoparasites
Answer: Pathogenic parasites
El Nino goes away in March and then reappears in.?
(a). May
(b). October
(c). August
(d). December
Answer: December
Which of the following beach types is not regarded as a significant type?
(a). Cliffy shore
(b). Shore at Layey
(C) Clayey shore
(d)Darren Shore
Solution: Clayey shore
Which of the following is not the aim of Indian sustainable agriculture.?
(a). Mechanised farming
(b). Reduce the use of chemical fertilizer and pesticides
(c). Maintaining productive topsoil
(d). Keep farms economically viable
Answer: Mechanised farming
When the pressure gradient force balances, geostrophic wind results.?
(a). Frictional force
(b). Coriolis force
(c). Coriolis and frictional force together
(d). Centripetal force
Answer: Coriolis force
The Kyoto Protocol’s duration has been extended past December 2012 by.?
(a).8 years
(b). 7 years
(c). 5 years
(d). 3 years
Answer: 5 years
GLOBE stands for.?
(a). Global Leading Occupations to Benefit the Environment
(b).GlobalLearning and Observations to Benefit the Environment
(c). GeneralLearning and Observations to Benefit the Environment
(d). Global Leaders and their Observations to Benefit the Environment
Answer: GlobalLearning and Observations to Benefit the Environment
When a species can utilise all physical, chemical, and biological elements to the fullest extent possible in the absence of competition, it is referred to as.?
(a). Fundamental niche
(b). Ecological niche
(c). Competitive exclusion
(d).Realized niche
Answer: Fundamental niche
Shortwave ultraviolet radiations are absorbed in the highest layer of the earth’s atmosphere, which is.?
(a).Mesosphere
(b). Stratosphere
(c). Troposphere
(d). Thermosphere
Answer: Thermosphere
The band designated as UV-C, which is fatal to bacteria, is.?
(a). 0.29 – 0.32 m
(b). 0.2 – 0.29 m
(c). 0.17 – 0.2 m
(d). 0.07 – 0.21 m
Answer: 0.2 – 0.29 m
The following is a list of meteorological scales, starting with the smallest.?
(a). Meso–, Macro–, Micro–
(b). Macro–, Meso–, Micro–
(c).Macro –, Micro –, Meso –
(d). Meso–, Macro–, Micro–
Answer: Meso–, Macro–, Micro–
The POH of a 0.001 M solution of HCl is.?
(a). 12
(b). 11
(c). 10
(d). 13
Answer: 11
Assume that the atmosphere is isothermal at 25 degrees Celsius, the highest daily surface temperature is 35 degrees Celsius, and the mixing height is 1 degree Celsius every 100 metres.?
(a). 3.5 km
(b). 1 km
(c). 1.5 km
(d). 2.5 km
Answer: 1 km
Choose the element and health effect pair that is accurately matched.?
(a). Lead – Methaemoglobinemia
(b). PAN – Hypoxemia
(c). Mercury – Nervous disorder
(d). Arsenic – Kidney damage
Answer: PAN – Hypoxemia
Which of the following organisms can function in various food chains as a primary consumer, secondary consumer, tertiary consumer, or scavenger.?
(a). Snake
(b). Tiger
(c). Raven
(d). Phytoplanktones
Answer: Raven
What is the proper order if several threatened species categories are listed in a list.?
(a). VulnerableRare Endangered Extinct
(b).Extinct Vulnerable Rare Endangered
(c). Vulnerable Rare Extinct Endangered
(d). Rare Vulnerable Endangered Extinct
Answer: VulnerableRare Endangered Extinct
The propensity of biological systems to withstand change and maintain an equilibrium is known as,?
(a). Ecological efficiency
(b). Feedback mechanism
(c). Homeostatis
(d). Carrying capacity
Answer: Homeostatis
What form of ex situ conservation technique is the answer to the following question.?
(a). Wildlife sanctuaries
(b). Zoological park
(c). Botanical garden
(d). Gene banks
Answer: Wildlife sanctuaries
When ‘a’ is equal to, what happens when the greatest amount of power from the wind can be extracted? If “a” is the fractional wind speed drop at the wind turbine, when does this happen?
(a). 1/2
(b). 1
(c). 1/3
(d). 3/5
Answer: 1/3
The creation of hazard-zoning maps in landslide-prone areas necessitates thorough examination of.?
(a). details of structural and lithological settings.
(b). All of these.
(c). seismicity pattern of the region.
(d). geomorphic features relating to instability of slopes.
Answer: All of these.
What is a polycyclic aromatic hydrocarbon’s (PAH) natural source is.?
(a). Grass fires
(b). Anaerobic bacteria
(c). Aerobic bacteria
(d).Root exudates
Answer: Grass fires
The decreasing order of stability of the following igneous rock minerals towards weathering, according to Goldieh is.?
(a). Muscovite > Quartz > Potash feldspar > Biotite
(b). Quartz > Muscovite > Potash feldspar > Biotite
(c). Biotite > Potash feldspar > Muscovite > Quartz
(d). Potash feldspar > Quartz > Muscovite > Biotite
Answer: Quartz > Muscovite > Potash feldspar > Biotite
A public hearing is held.?
(a). Prior to approval of Terms of Reference
(b).Prior to site selection
(c). After preparation of EIA
(d). After environmental clearance
Answer: After preparation of EIA
A sound pressure level of 80 dB is referred to as.?
(a). 0.2 Pa
(b). 200 Pa
(c). 20 Pa
(d). 0.02 Pa
Answer: 0.2 Pa
Pitchblende is an ore of.?
(a). Nickel
(b). Uranium
(c). Molybdenum
(d).Chromium
Answer: Uranium
What happens to the P/B ratio (Gross production / Standing crop biomass) as a result of succession.?
(a). 1 or < 1 at developmental stages and approximately
(b). low during developmental stages and high at mature stage.
(c). 1 at mature stage high during developmental stages and low at mature stage.
(d). remaining unchanged at all stages.
Answer: high during developmental stages and low at mature stage.
In accordance with its geochemical affinity, copper (Cu) is categorised as.?
(a). Chalcophile element
(b). Siderophile element
(c). Lithophile element
(d). Atmophile element
Answer: Chalcophile element
The maximum level of chlorides permitted in drinking water, according to WHO, is.?
(a). 100 mg/L
(b). 600 mg/L
(c). 200 mg/L
(d). 800 mg/L
Answer: 600 mg/L
What does the wilting coefficient of a loam mean.?
(a).capillary water
(b). water holding capacity
(c).the minimum water content of the soil at which plants can no longer obtain water
(d). field capacity
Answer: the minimum water content of the soil at which plants can no longer obtain water
Which of the following methods can be used to assess the cadmium content in soil.?
(a). Atomic Absorption Spectrophotometer
(b). UV – Visible spectrophotometer
(c). XRD
(d). IR spectrometer
Answer: Atomic Absorption Spectrophotometer
Which projection method is used to calculate the eastings and northings in the universal polar stereographic coordinate system.?
(a). Polar aspect mercator projection
(b). Non-polar aspect stereographic projection
(c). Polar aspect stereographic projection
(d). Non-polar aspect mercator projection
Answer: Polar aspect stereographic projection
Which method does the exhaust silencer in cars use to reduce noise.?
(a). Absorption and destructive interference
(b). Destructive interference
(c). Reducing velocity of hot gases
(d).Absorption
Answer: Reducing velocity of hot gases
From commercial stacks, five particles ( 2-3 m) can be efficiently gathered by.?
(a). Venturi scrubbers
(b). Cyclone separators
(c). Fabric filters
(d). Settling chambers
Answer: Venturi scrubbers
Which are powerful chelators of soil fulvic acids.?
(a). Fe(OH)3
(b). Iron (III)
(c). Both Iron (II) and Iron (III)
(d). Iron (II)
Answer: Iron (II)
Which of the following methods can be used to assess the cadmium content in soil.?
(a). UV – Visible spectrophotometer
(b).XRD
(c). Atomic Absorption Spectrophotometer
(d). IR spectrometer
Answer: Atomic Absorption Spectrophotometer
The creation of hazard-zoning maps in landslide-prone areas necessitates thorough examination of.?
(a). details of structural and lithological settings.
(b). geomorphic features relating to instability of slopes.
(c). seismicity pattern of the region.
(d). All of these.
Answer: All of these.
What does the wilting coefficient of a loam mean.?
(a). the minimum water content of the soil at which plants can no longer obtain water
(b). field capacity
(c). capillary water
(d). water holding capacity
Answer: the minimum water content of the soil at which plants can no longer obtain water
The decreasing order of stability of the following igneous rock minerals towards weathering, according to Goldieh, is.?
(a). Quartz > Muscovite > Potash feldspar > Biotite
(b). Biotite > Potash feldspar > Muscovite > Quartz
(c). Muscovite > Quartz > Potash feldspar > Biotite
(d). Potash feldspar > Quartz > Muscovite > Biotite
Answer: Quartz > Muscovite > Potash feldspar > Biotite
In accordance with its geochemical affinity, copper (Cu) is categorised as.?
(a). Siderophile element
(b). Chalcophile element
(c). Lithophile element
(d). Atmophile element
Answer: Chalcophile element
When ‘a’ is equal to, what happens when the greatest amount of power from the wind can be extracted? If “a” is the fractional wind speed drop at the wind turbine, when does this happen?
(a). 1/2
(b). 3/5
(c). 1
(d). 1/3
Answer: 1/3
The maximum level of chlorides permitted in drinking water, according to WHO, is.?
(a). 100 mg/L
(b). 600 mg/L
(c). 200 mg/L
(d). 800 mg/L
Answer: 600 mg/L
The P/B ratio (Gross production / Standing crop biomass) changes as a result of succession. It is.?
(a). remaining unchanged at all stages.
(b). low during developmental stages and high at mature stage.
(c). > 1 or < 1 at developmental stages and approximately 1 at mature stage
(d). high during developmental stages and low at mature stage.
Answer: high during developmental stages and low at mature stage.
What is a polycyclic aromatic hydrocarbon’s (PAH) natural source.?
(a). Root exudates
(b). Grass fires
(c). Aerobic bacteria
(d).Anaerobic bacteria
Answer: Grass fires
Which method does the exhaust silencer in cars use to reduce noise.?
(a). Reducing velocity of hot gases
(b). Destructive interference
(c). Absorption
(d). Absorption and destructive interference
Answer: Reducing velocity of hot gases
Effectively collecting five particles ( 2-3 m) from industrial stacks.?
(a). Fabric filters
(b). Venturi scrubbers
(c). Cyclone separators
(d). Settling chambers
Answer: Venturi scrubbers
Which projection method is used to calculate the eastings and northings in the universal polar stereographic coordinate system.?
(a). Non-polar aspect mercator projection
(b). Non-polar aspect stereographic projection
(c). Polar aspect mercator projection
(d). Polar aspect stereographic projection
Answer: Polar aspect stereographic projection
Which are powerful chelators of soil fulvic acids.?
(a). Iron (II)
(b). Iron (III)
(c). Both Iron (II) and Iron (III)
(d). Fe(OH)3
Answer: Iron (II)
Pitchblende is an ore of.?
(a). Nickel
(b). Chromium
(c). Uranium
(d). Molybdenum
Answer: Uranium
The distinction between a mineral reserve and a resource is.?
(a). Reserve implies high degree of economic viability and highdegree of geological knowledge
(b). Resource implies high degree of geological knowledge
(c). Reserve implies high degree of economic viability
(d). Resource implies high degree of economic viability and high degree of geological knowledge
Answer: Reserve implies high degree of economic viability and highdegree degree of geological knowledge
A public hearing is held.?
(a). Prior to site selection After preparation of EIA
(b). Prior to approval of Terms of Reference
(c). After preparation of EIA
(d).After environmental clearance
Answer: After preparation of EIA
Utilising the Nalgonda Fluoride Removal Technique.?
(a).Sodium salts
(b). Aluminium salts
(c). Potassium salts
(d). Magnesium salts
Answer:Aluminium salts
The only approach that is widely used to separate semivolatile organic molecules from their matrix is.?
(a). Double infiltration
(b). Sedimentation technique
(c). Solvent extraction
(d). Permeation
Answer: Solvent extraction
Which of the following factors does not indicate the presence of water vapour in a specific volume of air.?
(a). Virtual temperature
(b). Potential temperature
(c). Wet bulb temperature
(d). Dew point
Answer:Potential temperature
The Stockholm Convention is an international agreement to safeguard people against.?
(a). persistent organic pollutants
(b). hospital acquired infections
(c). toxic gases
(d). carbon monoxide
Answer: persistent organic pollutants
The following is not a Millennium Development Goal, which one is.?
(a). Ensuring environmental sustainability
(b). Eradicating extreme poverty and hunger
(c). Developing global partnership for development
(d). Achieving universal energy security
Answer: Achieving universal energy security
Formazin is used in turbidity analysis.?
(a). to stabilize the samples
(b). to preserve the samples
(c). to make turbidity standards
(d). to remove colour interferences
Answer: to make turbidity standards
Indicate the appropriate correlation between the dangerous metal and its negative effects.?
(a). Zn – Brain tissue damage
(b). Ni – Keratosis
(c).Ar – Renal poisoning
(d). Hg – Pulmonary disease
Answer: Zn – Brain tissue damage]
For 1000 ml of a 5 ppm solution, M.W. 145.16 of 8-hydroxyquinoline is needed.?
(a). 5 mg
(b). 1.45 mg
(c). 7.25 mg
(d). 14.5 mg
Answer: 5 mg
Our nation’s laws on the management of radioactive waste are as follows.?
(a). HazardousWaste (Management, Handling and Transboundary Movement
(b). Environment (Protection) Act, 1986
(c). Atomic Energy Act, 1962
(d). BiomedicalWaste (Management & Handling) Rules 1998
Answer: Environment (Protection) Act, 1986
Water’s pE values range from around.?
(a). – 1 to 14
(b).0 to 14
(c). – 12 to 25
(d).1 to 12
Answer: – 12 to 25
Which of the following noise indices best captures the degree of ambient noise in a space.?
(a). L90
(b). L50
(c). L10
(d). TNI
Answer: L90
The particles with the greatest capacity to draw and retain the ions K+, Ca++, and NH4+ on their surfaces are.?
(a).Loam
(b). Sand
(c). Clay
(d). Loamy sand
Answer: Clay
A focus of the National Land Reform Policy is.?
(a). Restoration of ecological balance
(b). Tenancy reforms
(c). Natural regeneration
(d). Watershed approach
Answer: Tenancy reforms
Methane has a higher potential to cause global warming than CO2.?
(a). 5 – 10 times more
(b). 40 – 45 times more
(c). 20 – 25 times more
(d). 60 – 65 times more
Answer: 20 – 25 times more
You may get vertical dimensions from.?
(a). DEM
(b).Topographic Sheets
(c). SRTM
(d). All the above
Answer: All the above
If there is a volcanic eruption, it will be violent.?
(a). High silica and high volatiles
(b). High silica and low volatiles
(c). Low silica and low volatiles
(d). Low silica and high volatiles
Answer: High silica and low volatiles
The interaction between two creatures in which one benefits at the expense of the other is referred to as.?
(a). Predation
(b).Scavenging
(c). Parasitism
(d). Symbiosis
Answer: Parasitism
When one organism benefits at the expense of the other, this arrangement is referred as as.?
(a). Parasitism
(b). Predation
(c). Scavenging
(d). Symbiosis
Answer: Parasitism
Which of the following doesn’t belong to India’s list of IUCN-designated threatened species.?
(a). Mountain gorilla
(b). Bengal Tiger
(c). Indian White rumped vulture
(d). Asiatic Lion
Answer: Mountain gorilla
Which ecosystem has the lowest net primary production per square metre among the following.?
(a). A grassland
(b). A tropical rain forest
(c).A coral reef
(d). An open ocean
Answer: An open ocean
Energy consumption at the consumer level is referred to as.?
(a). Net primary productivity
(b). Gross primary productivity
(c). Primary productivity
(d). Secondary productivity
Answer: Net primary productivity
More peaty soil can be found in.?
(a). Maharashtra
(b). Uttar Pradesh
(c). Kerala
(d). Gujarat
Answer: Kerala
The act of establishing a species in a new location is known asa.?
(a). Ecesis
(b). Aggregation
(c). Stabilization
(d). Migration
Answer: Stabilization
Zooplankton on the continental shelf often resembles that found in.?
(a). Neritic region
(b). Benthic region
(c). Estuary region
(d). Pelagic regionv
Answer: Pelagic region
The toxicity of causes “Mesothelioma.?
(a). Arsenic
(b). Lead
(c). Mercury
(d). Carbon monoxide
Answer:Arsenic
An algal biofertilizer includes.?
(a). Blue green algae and Azolla
(b). Algal biomass and Mycorrhiza
(c). Blue green algae and earthworm
(d). Green algae and Rhizobia
Answer: Blue green algae and Azolla
Which one of the following is the precipitation-measuring satellite.?
(a).TRMM
(b). GRACE
(c). ASTER
(d). SPOT
Answer: TRMM
Brown forest dirt is also referred to as.?
(a).Spodosols
(b). Altisols
(c). Entisols
(d). Mollisols
Answer: Entisols
Minerals in clay are.?
(a). Phyllosilicates
(b). Sorosilicates
(c). Inosilicates
(d).Tectosilicates
Answer: Phyllosilicates
900 kJ/mol of energy are released during methane burning. Methane’s carbon content is what.?
(a). ~ 0.05 gram C/kJ
(b). ~ 0.018 gram C/kJ
(c). ~ 0.013 gram C/kJ
(d). ~ 1.08 gram C/kJ
Answer: ~ 0.013 gram C/kJ
The CPCB announced national ambient air quality standards for main contaminants in.?
(a).2004
(b).1984
(c). 1994
(d). 1974
Answer: 1994
What does B10 mean.?
(a). Blending of 50 percent biodiesel with 50 percent conventional diesel.
(b). Blending of 90 percent biodiesel with 10 percent conventional diesel.
(c). Blending of 10 percent biodiesel with 90 percent conventional diesel.
(d). Blending of 1 percent biodiesel with 10 percent conventional diesel.
Answer: Blending of 10 percent biodiesel with 90 percent conventional diesel.
What is the term for a population’s gene pool changing over time.?
(a).Macroevolution
(b). Microevolution
(c). Chemical evolution
(d). Inorganic evolution
Answer: Microevolution
The mean of a random sample of size 26 is 20. The variations from the mean are squared to the power of 200. What is the va if the population mean is 18?t-statistic lue of?
(a). ~ 0.9
(b). ~ 2.1
(c). ~ 3.6
(d). ~ 5.2
Answer: ~ 3.6
Following an Environmental Impact Assessment, the Environmental Clerance’s validity period is at its shortest for.?
(a). Area development projects
(b). River valley projects
(c). Harbour projects
(d). Mining projects
Answer: Area development projects
The vertical pressure variation scale length in the atmosphere is.?
(a). ~ 2.5 km
(b). ~ 7 km
(c).~ 5 km
(d). ~ 8.5 km
Answer: ~ 7 km
Who is in charge of the EIA’s public consultation process.?
(a). State Pollution Control Board
(b). State Pollution Control Board and CPCB Chairman
(c). State Pollution Control Board and District Collector
(d). State Pollution Control Board and Civil Society
Answer: State Pollution Control Board and District Collector
Which of the following is true of hazardous wastes.?
(a). They contain one or more of 39 toxic compounds
(b). They are capable of corroding metal containers
(c). They are nonreactive and stable
(d). They catch fire easily
Answer: They are nonreactive and stable
Lignocellulose can be converted into bio-oil by.?
(a). Fast pyrolysis
(b).Combustion
(c). Gasification
(d). Transesterification
Answer: Fast pyrolysis
The Indian Constitution guarantees the right to a clean environment by.?
(a). Article 22
(b). Article 19
(c). Article 25
(d). Article 21
Answer: Article 21
In that year, the Public Liability Insurance Act was created.?
(a). 1991
(b). 1989
(c). 1986
(d). 1995
Answer: 1991
Over the course of 50 years, the population of an urban area rose from 5 million to 15 million. If population increase throughout this time period has been exponential and constant, the growth.?
(a). ~ 0.693 %
(b). ~ 1.2 %
(c). ~ 2.2 %
(d). ~ 1.38 %
Answer: ~ 2.2 %
Should interpretation and evaluation be taken into account in environmental assessment studies.?
(a). Significance of measured impacts
(b). Uncertainty of possible impacts
(c). Comparison of alternatives
(d). All of these
Answer: All of these
One arm of the Y-shaped energy flow model depicts a herbivore, and the other a carnivore.?
(a). Carnivore
(b). Omnivore
(c). Decomposer
(d). Secondary consumer
Answer: Decomposer
The diversity of species rises as one moves forward from.?
(a). higher to lower altitude and higher to lower latitude
(b). higher to lower altitude and lower to higher latitude
(c). lower to higher altitude and lower to higher latitude
(d).lower to higher altitude and higher to lower latitude
Answer:higher to lower altitude and higher to lower latitude
The different ecosystems can be placed in a decreasing order of yield depending on the level of net primary productivity, right.?
(a). Tropical seasonal forest –Tropical rain forest – Temperate Grassland – Woodland and Shrubland.
(b). Tropical rain forest – Temperate Grassland – Woodland and Shrubland – Tropical seasonal forest.
(c). Tropical seasonal forest –Tropical rain forest – Woodland and Shrubland– Temperate Grassland
(d). Tropical rain forest – Tropical seasonal forest – Woodland and Shrubland–Temperate Grassland.
Answer: Tropical rain forest – Tropical seasonal forest – Woodland and Shrubland–Temperate Grassland.
How many countries throughout the world have been classified as mega-biodiverse.?
(a). 2
(b).17
(c).12
(d). 35
Answer: 17
Which of the following is accurate when risk frequency is unlikely but yet possible.?
(a). Risk is unacceptable.
(b). Risk reduction measures should be implemented.
(c). Risk is acceptable
(d). Both (A) and (B) are true.
Answer: Risk is acceptable.
Raunkiaer’s typical biological spectrum for the world’s phanerogamic flora displays one of the following patterns of coexistence (%) of various life forms.?
(a). Phanerophytes,Hemicryptophytes, Therophytes, Cryptophytes, Chaemophytes.
(b).Phanerophytes,Hemicryptophytes,Cryptophytes,Chaemophytes Therophytes.
(c). Phanerophytes,Hemicryptophytes, Therophytes,Chaemophytes, Cryptophytes.
(d). Phanerophytes, Chaemophytes,Hemicryptophytes, Cryptophytes, Therophytes.
Answer: Phanerophytes,Hemicryptophytes, Therophytes,Chaemophytes, Cryptophytes
Following is the ranking of fossil fuels from highest to lowest heating value.?
(a). Coal, Petroleum, Natural Gas,Hydrogen.
(b).Hydrogen, Coal, Natural Gas,Petroleum.
(c). Hydrogen,Natural Gas,Petroleum, Coal.
(d). Natural Gas, Petroleum, Coal,Hydrogen.
Answer: Hydrogen,Natural Gas, Petroleum, Coal.
Which of the following is a pesticide based on methyl isocyanate (MIC).?
(a). Hydrogen, Coal, Natural Gas,Petroleum.
(b). Temix (Aldicarb)
(c).Sevin (Carbaryl)
(d). All the above
Answer: All the above
Which of the following isotopes is not present in natural radioactive ore.?
(a). U235
(b). U238
(c). Pu239
(d). Th232
Answer: Pu239
What is the name of the process of dividing larger hydrocarbon molecules into smaller hydrocarbon molecules.?
(a). Pyrolysis
(b). Thermal decomposition
(c). Cracking
(d). Combustion
Answer: Cracking
How many independent coordinates can the human eye perceive in a false-color set.?
(a).Four
(b). Three
(c). One
(d). Five
Answer: three
What is the typical breakdown of biodegradable garbage in Indian municipal solid waste (MSW).?
(a). 30 – 35%
(b). 55 – 65%
(c). 40 – 45%
(d). 60 – 70%
Answer: 40 – 45%
Which of the following biodiversity conservation strategies is an ex-situ approach.?
(a). Seed storage
(b).Tissue culture
(c).DNA Bank
(d). All the above
Answer: All the above
What is the suggested technique of treatment for hospital-generated human anatomical waste.?
(a). Incineration
(b). Autoclaving
(c). Chemical disinfection
(d). All the above
Answer: Incineration
What is rated as an earthquake with a Richter Scale greater than 8.?
(a). Destructive
(b). Great
(c). Major
(d). Damaging
Answer: Great
Which of the following qualifies as an organic fertiliser complex.`?
(a) NPK
(b). Potash
(c). R2 value
(d). Urea
Answer: NPK
What would the brightness value be for the corresponding color’s (RGB) darkest level.?
(a). 255
(b). 256
(c). 0
(d). 2047
Answer: 0
Which of the following laws states that the partial pressure of a gas in contact with a liquid determines how soluble it is.?
(a). Hick’s law
(b). 2nd Law of Newton
(c). Hardy-Weinburglaw of equilibrium
(d). Henry’s law
Answer: Henry’s law
Which of the following plant groupings benefits most from an increase in CO2 levels.?
(a). CAM plants
(b). C4 plants
(c). C3 plants
(d). All of these
Answer: C3 plants
What is the range of UV-A radiation’s wavelengths.?
(a). 200 – 240 nm
(b). 320 – 400 nm
(c). 280 – 320 nm
(d). 240 – 280 nm
Answer: 320 – 400 nm
At one spot, two noises of 80 dB and 85 dB superimpose. What sound is produced as a result there.?
(a). ~ 165 dB
(b). ~ 87 dB
(c). ~ 91 dB
(d). ~ 82 dB
Answer: ~ 82 dB
A wind turbine’s performance factor for producing the most power is.?
(a). 13/18
(b).16/27
(c). 5/8
(d).11/17
Answer: 16/27
What is the value of the Ground Resolution Element (GRE) if D is the Detector Dimension, F is the Focal Length, and H is the Flying Height.?
(a). (D/F) H
(b).H/F
(c). D/F
(d). D/H
Answer: (D/F) H
Greater amounts of in laterite soil.?
(a) Manganese and Silicate
(b). Magnesium and Boron
(c). Iron and Aluminium
(d). Potassium and Lead
Answer: Iron and Aluminium
What one of the following doesn’t directly contribute to climate change.?
(a). Sulphate and nitrate aerosols
(b). Black carbon aerosols
(c). Surface ozone
(d). Nitric oxide
Answer: Nitric oxide
Scale lengths connected to synoptic scale atmospheric phenomena often fall into this range.?
(a). 10 – 100 km
(b).10,000 – 100,000 km
(c). 200 – 40,000 km
(d). 1 – 10 km
Answer: 200 – 40,000 km
What kind of support medium are utilised for the various kinds of electrophoresis.?
(a). Polyacrylamide gel
(b).Agarose gel
(c). Sodium dedecyl sulphate polyacrylamide gel
(d). All the above
Answer: All the above
Which of the following is used to calculate ambient suspended particulate matter concentration.?
(a). Cascade impactor
(b). Kjeldahl’s Flask
(c). Sacchi Disk
(d). Folin-Wu method
Answer: Cascade impactor
Which technique is employed to segregate molecules according to their sizes.?
(a). Molecular exclusion chromatography
(b). Ion exchange chromatography
(c). Adsorption chromatography
(d). Thin layer chromatography
Answer: Molecular exclusion chromatography
Maximum CaO is found in.?
(a). Bauxite
(b). Limonite
(c). Siderite
(d). Lime Stone
Answer:Lime Stone
What is the procedure for extracting ethanol from fermentation broth downstream.?
(a). Distillation
(b). Flow cytometry
(c). Filtration
(d). Flame Photometry
Answer: Distillation
The niche of an organism is.?
(a). the way the organism uses the range of physical and biological conditions in which it lives
(b). the function role played by the organism where it lives
(c). all the biological and physical factors in the organism’s environment.
(d). the range of temperature that the organism needs to live.
Answer: the function role played by the organism where it lives
Which nation utilises nuclear energy the most.?
(a). U.S.A
(b). Japan
(c). France
(d). Germany
Answer: France
What is an interaction association between two populations where one population benefits but the other is unaffected by the association.?
(a). Mutualism
(b). Commensalism
(c). Neutralism
(d). Symbiosis
Answer: Commensalism
Can ultrafiltration get rid of.?
(a). Suspended solids
(b). Protozoa
(c). Bacteria
(d). All the above
Answer: All the above
In addition to having a high calorific value, a good automotive fuel should have.?
(a). High ignition temperature
(b). Moderate ignition temperature
(c). Low ignition temperature
(d). High viscosity
Answer: Moderate ignition temperature
What type of bacteria extract copper from low-grade copper ore.?
(a). Rhizobium sp
(b). Bacillus thuringiensis
(c). Thiobacillus sp
(d). All of these
Answer: Thiobacillus sp
Algae’s reserve food source is.?
(a). Protein
(b). Cellulose
(c). Starch
(d). None of these
Answer: Starch
One example is “Bermuda grass allergy”.?
(a). Hydroborne allergy
(b). Contact allergy
(c). Airborne allergy
(d). Soilborne allergy
Answer: Airborne allergy
Which of the following best describes xenobiotics’ propensity to biodegrade.?
(a). Rate of CO2 formation
(b). Ratio of BOD to COD
(c).Rate of O2 consumption
(d). All of these
Answer: All of these