Environmental Science MCQ for UGC NET

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    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

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    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

    1. golgi apparatus
    2. lysosomes
    3. plasticids
    4. endoplasmic reticulum

    Option 4 – endoplasmic reticulum

    Which of the following contain the ribosomes?

    1. rough endoplasmic reticulum
    2. smooth endoplasmic reticulum
    3. golgi complex
    4. lysosomes

    Option 1 – rough endoplasmic reticulum

    In vertebrate liver cells, what plays a crucial role in detoxiying poisons and drugs?

    1. rough endoplasmic reticulum
    2. smooth endoplasmic reticulum
    3. golgi complex
    4. lysosomes

    Option 2 – smooth endoplasmic reticulum

    Which of the following will play a major role in the synthesis of the proteins?

    1. ribosomes
    2. lysosomes
    3. crista
    4. chloroplast

    Option 1 – ribosomes

    Which of the following organelles function is to pack the substances before transportation

    1. plastids
    2. vacuoles
    3. ribosome
    4. golgi body

    Option 4 – golgi body

    Which of the following is called the suicidal bag of the cell

    1. lysosome
    2. golgi body
    3. ribosome
    4. vacuoles

    Option 1 – lysosome

    Which organelles plays a major role in the respiration of the cell?

    1. ribosomes
    2. lysosomes
    3. mitochondria
    4. vacuoles

    Option 3 – mitochondria

    What is called as ‘the power house of the cell’?

    1. mitochondria
    2. lysosome
    3. golgi material
    4. ribosomes

    Option 1 – mitochondria

    Which organelles plays crucial role in the photosynthetic process?

    1. ribosome
    2. mitochondria
    3. lysosome
    4. 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?

    1. schleidon
    2. schwann
    3. robert hooke
    4. rudolf virchow

    Option 4 – rudolf virchow

    What portion of the eye is visible to us?

    1. 1/2
    2. 2/3
    3. 1/4
    4. 1/6

    Option 4 – 1/6

    Cornea is found in

    1. sclerotic layer
    2. choroid layer
    3. retina
    4. all together in a combined form

    Option 1 – sclerotic layer

    Which of the following has the blood vessels in excess?

    1. sclera
    2. retina
    3. choroid layer
    4. same in all

    Option 3 – choroid layer

    The lens in our eyes are

    1. mano convex
    2. mano concave
    3. bi concave
    4. bi convex

    Option 4 – bi convex

    Rods and cones are present in

    1. lens
    2. cornia
    3. retina
    4. iris

    Option 3 – retina

    Iodospin pigment is the one which becomes handy when

    1. there is bright light
    2. there is no light
    3. dreams
    4. seeing in water

    Option 1 – there is bright light

    What is called the clean window of the eye?

    1. cornea
    2. pupil
    3. lens
    4. retina

    Option 1 – cornea

    Auditory meatus is

    1. eardrum
    2. ear ossicles
    3. ear canal
    4. cochlea

    Option 3 – ear canal

    Saccules is

    1. the anterior part of the vertibule
    2. the posterior part of the vertibule
    3. the portion of scala vertibulli
    4. the bacillary membrane

    Option 1 – the anterior part of the vertibule

    Olfactory receptors are present in

    1. mucous membrane
    2. eustachian tube
    3. chorid
    4. taste buds

    Option 1 – mucous membrane

    On the sides of the tongue, the bump like structures are

    1. filiform papillae
    2. fungiform papillae
    3. cicumvallate papillae
    4. foliate papillae

    Option 4 – foliate papillae

    Fungi form papillae are

    1. flake like structures
    2. roundish structures
    3. back of tongue round structures
    4. hairy substances

    Option 2 – roundish structures

    Cutaneous receptors are responsible for

    1. sense of touch
    2. sense of taste
    3. sense of vision
    4. sense of smell

    Option 1 – sense of touch

    Which is the largest organ of the human body?

    1. heart
    2. lungs
    3. intestine
    4. skin

    Option 4 – skin

    Pacinian receptors are for

    1. touch
    2. pressure
    3. temperature
    4. all

    Option 2 – pressure

    Making of the nest, is the art acquired by the birds from which of the following?

    1. instinct
    2. imprinting
    3. conditioning
    4. imitation

    Option 1 – instinct

    Following the first seen object like ducklings is due to

    1. instinct
    2. imitation
    3. conditioning
    4. imprinting

    Option 4 – imprinting

    Children in the school getting accustomed to the school bell comes under

    1. instinct
    2. imitation
    3. conditioning
    4. imprinting

    Option 3 – conditioning

    Which of the following behaviour is taken as an advantage by the advertisers?

    1. imitation
    2. instinct
    3. conditioning
    4. 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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