Environmental Issues MCQs | Environmental Issues Objective Type Questions and Answers

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Questions
1 The presence of _________ in a water body is an indicator of water pollution.
A Zygosporangium
B E.Coli
C Deinococcus radiodurans
D None of the above

Answer:E.Coli
2 Eggshells of birds become unusually thin when exposed to the pesticides in their environment. The protein that gets affected is ________
A Calmodulin
B Cysteine
C Serine
D None of the above

Answer:Calmodulin
3 Lichens are good bioindicators for
A Environmental radiation
B Soil pollution
C Water and air pollution
D None of the above

Answer: Water and air pollution
4 A moth having a speckled wing, able to blend into its background due to its dark colouration is called
A Industrial melanism
B Adaptation
C Predation
D Evolution

Answer:Industrial melanism
5 Carbon dioxide is primarily called a greenhouse gas because
A Traps heat
B Traps light
C Traps warm currents
D None of the above

Answer: Traps heat
6 Trichoderma harzianum is a ________ that is predominantly used as a fungicide
A Virus
B Fungus
C Bacteria
D Protozoa

Answer:Fungus
7 Greenhouse gases are those that absorb and emit infrared radiation. Examples inlude__________
A Nitrogen
B Ozone
C Argon
D None of the above

Answer:Ozone
8 Depletion of the ozone layer is damaging to human health. Negative effects include
A Skin cancers
B Osteoporosis
C Dyspepsia
D None of the above

Answer:Skin cancers
9 __________ is an organism used to gauge the quality of an ecosystem.
A Decomposers
B Predator
C Bio-remediator
D Bioindicator

Answer:Bioindicator
10 _________ is a waste disposal method where solid organic wastes are converted to the residue and gaseous products through combustion.
A Incarnation
B Incineration
C Incarceration
D Incubation

Answer: Incineration
11 The major pollutant from automoblie exhaust is
A NO
B CO
C SO2
D Soot

Answer: CO
12 The green house gases, otherwise called radioactively active gases includes
A Carbon dioxide
B CH4
C N2O
D All of these

Answer:All of these
13 Algal bloom results in
A Global warming
B Industrial melanism
C Salination
D Biomagnification

Answer: Salination
14 A high Biological Oxygen Demand (BOD) indicates that:
A water is pure
B absence of microbial action
C Low level of microbial pollution
D High level of microbial pollution

Answer: High level of microbial pollution
15 The effects of radioactive pollutants depends upon
A Rate of diffusion
B Energy releasing capacity
C Rate of deposition of the contaminant
D Lesser inter-specific competition

Answer:All of these
16 The range of normal human hearing is in the range of
A 10 Hz to 80 Hz
B 50 Hz to 80 Hz
C 50Hz to 15000 Hz
D 15000 Hz and above

Answer: 50Hz to 15000 Hz
17 The pollution which does not persistent harm to life supporting system is
A Noise pollution
B Radiation pollution
C Organochlorine pollution
D All of these

Answer:Noise pollution
18 Soap and detergents are the source of organic pollutants like:
A glycerol
B polyphosphates
C sulphonated hydrocarbons
D all of these

Answer: all of these
19 Growing agricultural crops between rows of planted trees is known as
A Social forestry
B Jhum
C Taungya system
D Agroforestry

Answer: Taungya system
20 The main atmospheric layer near the surface of earth is
A troposphere
B mesophere
C ionosphere
D stratosphere

Answer: troposphere

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