Environmental Science MCQ for UGC NET. We covered all the Environmental Science MCQ for UGC NET pdf in this post for free so that you can practice well for the exam.
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MCQ on Environmental Science for UGC and NET Students
The pollution in a city like Delhi may be controlled to a great extent
(a) by proper sewage and proper exit of chemicals from factories
(b) by wide roads and factories away from the city
(c) by cleaning the city and scanty use of pesticides
(d) All of the above
Option d – All of the above
Which of the following chemicals causes depletion of the ozone layer?
(a) Carbon tetrachloride
(b) Methane
(c) Chlorofluorocarbon
(d) Carbon monoxide
Option c – Chlorofluorocarbon
In a food chain, the third trophic level is always occupied by
(a) herbivore
(b) carnivore
(c) decomposer
(d) producer
Option b – carnivore
The depletion of the ozone layer causes
(a) global wanning
(b) earthquakes
(c) increased UV radiations
(d) acid rain
Option c – increased UV radiations
In the given food chain if the amount of energy at the fourth trophic level is 4 kJ, what will be the energy available at the producer level? Grass → Grasshopper → Frog → Snake
(a) 4 kJ
(b) 40 kJ
(c) 400 kJ
(d) 4000 kJ
Option d – 4000 kJ
What will happen if all the deer are killed in the given food chain? Grass → Deer → Lion
(a) The population of grass decreases.
(b) The population of lions increases.
(c) The population of lions remains unchanged.
(d) The population of lions decreases and grass increases.
Option d – The population of lions decreases and grass increases
Which of the two in the following sets belong to the same trophic level?
(a) Grass; Grasshopper
(b) Goat; Spider
(c) Hawk; Rat
(d) Frog; Lizard
Option d – Frog; Lizard
The cycling of elements in an ecosystem is called
(a) chemical cycle
(b) geochemical cycle
(c) biogeochemical cycle
(d) geological cycle
Option c – biogeochemical cycle
If there was no CO₂ in the earth’s atmosphere, the temperature of the earth’s surface would be
(a) as such
(b) less than the present level
(c) the increase from the present level
(d) dependent upon the oxygen amount of in the environment
Option b – less than the present level
The greenhouse effect is due to the presence of
(a) the ozone layer in the atmosphere
(b) infrared light reaching the earth
(c) a moisture layer in the atmosphere
(d) a CO₂ layer in the atmosphere
Option d – a CO₂ layer in the atmosphere
Which of the following is an abiotic component of an ecosystem?
(a) Humus
(b) Bacteria
(c) Plants
(d) Fungi
Option a – Humus
Which one of the following pairs belongs to the category of primary consumers?
(a) Eagle and snake
(b) Grasshoppers & cattle
(c) Snake and frog
(d) Water beetles & fish
Option b – Grasshoppers & cattle
Which of the following is an autotroph?
(a) Lion
(b) Insect
(c) Tree
(d) Mushroom
Option c – Tree
In the garden ecosystem, which of the following are producers?
(a) Insects
(b) Snakes
(c) Grasses
(d) Rabbits
Option c – Grasses
Which one of the following is an artificial ecosystem?
(a) Pond
(b) Crop field
(c) Lake
(d) Forest
Option b – Crop field
An ecosystem includes
(a) all living organisms
(b) non-living objects
(c) both living organisms and non-living objects
(d) sometimes living organisms and sometimes nonliving objects
Option c – both living organisms and non-living objects
Excessive exposure of humans to UV-ray s results in (i) damage to the immune system (ii) damage to the lungs (iii) skin cancer (iv) peptic ulcer
(a) (i) and (ii)
(b) (ii) and (iv)
(c) (i) and (iii)
(d) (iii) and (iv)
Option c – (i) and (iii)
Which group of organisms are not constituents of a food chain?
(a) Grass, lion, rabbit
(b) Plankton, man, fish, grasshopper
(c) Wolf, grass, snake, tiger
(d) Frog, snake, eagle, grass, grasshopper
Option c – Wolf, grass, snake, tiger
If a grasshopper is eaten by a frog, then the energy transfer will be from
(a) producer to decomposer
(b) producer to primary consumer
(c) primary consumer to secondary consumer
(d) secondary consumer to primary consumer
Option c – primary consumer to secondary consumer
Excessive exposure to ultraviolet radiation causes
(a) inflammation of the liver
(b) cancer of the skin
(c) damage to the lungs
(d) jaundice
Option b – cancer of the skin
Which one of the following is an artificial ecosystem?
(a) Lake
(b) Forest
(c) Pond
(d) Crop field
Option d – Crop field
Acid rain is caused by the oxides of
(a) carbon
(b) nitrogen only
(c) sulphur only
(d) sulphur and nitrogen
Option d – sulphur and nitrogen
Which of the following is biodegradable?
(a) Aluminium can
(b) Polythene bag
(c) Cowdung
(d) DDT
Option c – Cowdung
Living things constitute the biotic component of the biosphere and the abiotic component consists of
(a) air, water, and soil
(b) oceans, land, and mountains
(c) sunlight, oxygen, and carbon dioxide
(d) All of these
Option a – air, water, and soil
Fixation of carbon dioxide in our atmosphere takes place by
(a) conversion of carbon dioxide into glucose by green plants in presence of sunlight
(b) many marine animals use carbonates dissolved in seawater to make their shells
(c) Both (1) and (2)
(d) fire fighting operations in forests
Option c – Both (1) and (2)
Who propounded the law of diffusion of gases?
(a) Boyle
(b) Charles
(c) Avogadro
(d) Graham
Option d – Graham
“The relative velocities of diffusion of different gases at certain temperatures and pressures are inversely proportional to the square root of their density.” This rule is
(a) Boyle’s law
(b) Charles’s law
(c) Law of admissibility
(d) Dalton’s law
Option c – Law of admissibility
Light gas in the air is
(a) Oxygen
(b) Ammonia
(c) Chlorine
(d) Propane
Option b – Ammonia
Putting perfume open in one corner of a room spreads its fragrance to all parts of the room. What is the reason for this?
(a) Evaporation
(b) Evaporation
(c) Diffusion
(d) Ablation
Option c – Diffusion
Solution is
(a) Homogeneous mixture of two or more substances
(b) Heterogeneous mixture of two or more substances
(c) Both of the above
(d) None of the above
Option a – Homogeneous mixture of two or more substances
Pressure on a gas to decrease its volume at a constant temperature
(a) Decreases
(b) Increases
(c) First decreases then increases
(d) Remains unchanged
Option b – Increases
Indiscriminate use of fertilizers has led to
(A) Soil pollution
(B) Water pollution
(C) Air pollution
(D) All of the above
Option d – All of the above
The highest chemical pollution is caused by the industrial effluents of
(A) the Leather industry
(B) the Paper industry
(C) the Rayon industry
(D) the Textile industry
Option a – the Leather industry
Acid rain is caused by the pollution of the environment by
(A) Carbon monoxide and carbon dioxide
(B) Carbon dioxide and nitrogen
(C) Nitrous oxide and sulfur dioxide
(D) Carbon dioxide
Option c – Nitrous oxide and sulfur dioxide
Acid rain occurs due to
(A) Acid vapor reaching the clouds
(B) Reaction between rainwater and carbon dioxide pollutants
(C) Reaction between clouds and sulfur dioxide pollutants
(D) Reaction between water vapor and electric ions during lightning and cloud burst
Option c – Reaction between clouds and sulfur dioxide pollutants
Which of the following, when dissolved in rainwater turns rainwater acidic (acid rain)?
(A) Oxide of sulfur
(B) Oxide of boron
(C) Hydrochloric acid
(D) Nitric acid
Option a – Oxide of sulfur
Acid rain is caused by
(A) Industries
(B) Petrol
(C) Burning coal
(D) Wood
Option a – Industries
Which of the following air pollutants is most dangerous?
(A) Ozone
(B) Hydrogen sulfide
(C) Carbon dioxide
(D) Carbon monoxide
Option d – Carbon monoxide
The non-biotic pollutant underground water is
(A) Bacteria
(B) Algae
(C) Arsenic
(D) Viruses
Option c – Arsenic
The network that creates the passages within the cytoplasm for the transport is
- golgi apparatus
- lysosomes
- plasticids
- endoplasmic reticulum
Option 4 – endoplasmic reticulum
Which of the following contain the ribosomes?
- rough endoplasmic reticulum
- smooth endoplasmic reticulum
- golgi complex
- lysosomes
Option 1 – rough endoplasmic reticulum
In vertebrate liver cells, what plays a crucial role in detoxiying poisons and drugs?
- rough endoplasmic reticulum
- smooth endoplasmic reticulum
- golgi complex
- lysosomes
Option 2 – smooth endoplasmic reticulum
Which of the following will play a major role in the synthesis of the proteins?
- ribosomes
- lysosomes
- crista
- chloroplast
Option 1 – ribosomes
Which of the following organelles function is to pack the substances before transportation
- plastids
- vacuoles
- ribosome
- golgi body
Option 4 – golgi body
Which of the following is called the suicidal bag of the cell
- lysosome
- golgi body
- ribosome
- vacuoles
Option 1 – lysosome
Which organelles plays a major role in the respiration of the cell?
- ribosomes
- lysosomes
- mitochondria
- vacuoles
Option 3 – mitochondria
What is called as ‘the power house of the cell’?
- mitochondria
- lysosome
- golgi material
- ribosomes
Option 1 – mitochondria
Which organelles plays crucial role in the photosynthetic process?
- ribosome
- mitochondria
- lysosome
- plastids
Option 4 – plastids
Who was the first to explain that the new cells could be formed only by the division of the pre-existing cells?
- schleidon
- schwann
- robert hooke
- rudolf virchow
Option 4 – rudolf virchow
What portion of the eye is visible to us?
- 1/2
- 2/3
- 1/4
- 1/6
Option 4 – 1/6
Cornea is found in
- sclerotic layer
- choroid layer
- retina
- all together in a combined form
Option 1 – sclerotic layer
Which of the following has the blood vessels in excess?
- sclera
- retina
- choroid layer
- same in all
Option 3 – choroid layer
The lens in our eyes are
- mano convex
- mano concave
- bi concave
- bi convex
Option 4 – bi convex
Rods and cones are present in
- lens
- cornia
- retina
- iris
Option 3 – retina
Iodospin pigment is the one which becomes handy when
Option 1 – there is bright light
What is called the clean window of the eye?
- cornea
- pupil
- lens
- retina
Option 1 – cornea
Auditory meatus is
- eardrum
- ear ossicles
- ear canal
- cochlea
Option 3 – ear canal
Saccules is
- the anterior part of the vertibule
- the posterior part of the vertibule
- the portion of scala vertibulli
- the bacillary membrane
Option 1 – the anterior part of the vertibule
Olfactory receptors are present in
- mucous membrane
- eustachian tube
- chorid
- taste buds
Option 1 – mucous membrane
On the sides of the tongue, the bump like structures are
- filiform papillae
- fungiform papillae
- cicumvallate papillae
- foliate papillae
Option 4 – foliate papillae
Fungi form papillae are
- flake like structures
- roundish structures
- back of tongue round structures
- hairy substances
Option 2 – roundish structures
Cutaneous receptors are responsible for
- sense of touch
- sense of taste
- sense of vision
- sense of smell
Option 1 – sense of touch
Which is the largest organ of the human body?
- heart
- lungs
- intestine
- skin
Option 4 – skin
Pacinian receptors are for
- touch
- pressure
- temperature
- all
Option 2 – pressure
Making of the nest, is the art acquired by the birds from which of the following?
- instinct
- imprinting
- conditioning
- imitation
Option 1 – instinct
Following the first seen object like ducklings is due to
- instinct
- imitation
- conditioning
- imprinting
Option 4 – imprinting
Children in the school getting accustomed to the school bell comes under
- instinct
- imitation
- conditioning
- imprinting
Option 3 – conditioning
Which of the following behaviour is taken as an advantage by the advertisers?
- imitation
- instinct
- conditioning
- imprinting
Option 3 – conditioning
Which of the following instruments is used to measure Soil Water Tension?
(a) Photometer
(b) Pyrometer
(c) Psychrometer
(d) Tensiometer
Option c – Psychrometer
Which of the following stores data permanently in a computer?
(a) A.L.U.
(b) Cache Memory
(c) RAM
(d) ROM
Option d – ROM
Who invented the first working laser?
(a) A. H. Taylor
(b) W.K. Roentgen
(c) T. H. Maiman
(d) Fred Morrison
Option c – T. H. Maiman
The meter in a vehicle that calculates the distance covered by the vehicle is called ……….
(a) Speedometer
(b) Odometer
(c) Thermometer
(d) Kilometre
Option b – Odometer
Who invented Bluetooth?
(a) Kirkpatrick Macmillan
(b) Benjamin Franklin
(c) Dr. Jaap Haartsen
(d) Charles Babbage
Option c – Dr. Jaap Haartsen
PET is a very familiar form of…. It is used for making bottles.
(a) nylon
(b) acrylic
(c) polyester
(d) rayon
Option c – polyester
Who invented the vacuum pump?
(a) Ottovon Guericke
(b) Cai Lun
(c) Melitta Bentz
(d) William Henry Fox Talbot
Option a – Ottovon Guericke
Which of the following devices is best suited for measuring the temperature inside metallurgical furnaces?
(a) Pyrometer
(b) Thermocouple
(c) Thermometer
(d) Thermistor
Option a – Pyrometer
Which of the following devices is used to measure humidity?
(a) Hydrometer
(b) Hygrometer
(c) Psychometer
(d) Anemometer
Option b – Hygrometer
Who invented Dynamite? ( Environmental science mcq for ugc net )
(a) J.B. Dunlop
(b) Alfred Nobel
(c) James Simons
(d) Peter Hargreaves
Option b – Alfred Nobel
What is a bug in computer terminology?
(a) A virus
(b) A program
(c) An error in program
(d) Magnetic disk storage device
Option c – An error in program
What was invented by Zacharias Jansen?
(a) Jet Engine
(b) Radium
(c) Microscope
(d) Electric Lamp
Option c – Microscope
Who was the inventor of frozen foods? ( Environmental science mcq for ugc net )
(a) Alfred Nobel
(b) Clarence Birdseye
(c) Frank Whittle
(d) Ives McGaffey
Option b – Clarence Birdseye
An I.P. address is ……… bit number.
(a) 8
(b) 32
(c) 64
(d) 104
Option b – 32
CAD stands for …….
(a) Common Aided Design
(b) Computer Aided Design
(c) Complex Aided Design
(d) Communication Aided Design
Option b – Computer Aided Design
Which of the following was invented by Sir Humphry Davy?
(a) Safety Pin
(b) Steam Engine
(c) Safety Lamp
(d) X-Rays
Option c – Safety Lamp
What is the full form of JPEG? ( Environmental science mcq for ugc net )
(a) Joint Photographic Experts Group
(b) Joint Protocol Experts Graphics
(c) Joint Programming Experts Graphics
(d) Joint Project Experts Group
Option a – Joint Photographic Experts Group
C++ is………
(a) an operating system
(b) a programming language
(c) a software
(d) None of these
Option b – a programming language
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