Environmental Science MCQs covering all topics like ecology, climate change, pollution, and conservation. Perfect for competitive exams and quiz preparation.
Environmental Science MCQs
The year declared by UN as International Year of Forests:
A. 2010
B. 2011
C. 2012
D. 2013
Indiscrimately cutting down of tress is called?
A. Afforestation
B. Deforestation
C. Both A & B
D. None of these
The burning of fossil fuels releases a large amount of?
A. Nitrogen into air
B. Sulphur into air
C. Carbon dioxide into Air
D. Oxygen into air
Red data book contains data of?
A. All plant Species
B. All animal Species
C. Threatened Species
D. Economically important species
Energy produced by hydel-power plant is?
A. Non-polluting and non-renewable
B. Polluting and non-renewable
C. Non-polluting and renewable
D. Polluting and renewable
Which of the following regions has the maximum diversity?
A. Taiga
B. Mangroves
C. Temperate Forest
D. Coral reefs
Hotspots are regions of high?
A. Diversity
B. Rareism
C. Endemism
D. Critically endangered population
Pollutants that are easily manageable and decomposable in nature are called?
A. Non-biodegradable pollutants
B. Renewable Pollutants
C. Biodegradable Pollutants
D. None of these
Biosphere reserve has following zone except?
A. Core zone
B. Command zone
C. Buffer zone
D. Spherical zone
Which of the following are the causes of soil erosion?
A. Unrestricted grazing
B. Over cultivation
C. Deforestation
D. All of these
The greenhouse gas with high heat trapping capability:
A. Butane C4H10
B. Propane C3H8
C. Ethane C₂H₆
D. Methane CH₄
The primordial earth’s atmosphere was:
A. Increasing
B. Reducing
C. Constant
D. None of these
Soil conservation is the process where:
A. Soil is Aerated
B. Soil is protected against loss
C. Soil Erosion is Allowed
D. Sterile soil is converted to fertile soil
The number of biosphere reserves in Pakistan recognized as a part of world network of biospheres:
A. 5
B. 6
C. 7
D. 8
Growing rice results in the release of:
A. Ethane
B. Methane
C. Propane
D. Butane
Which is a native species of Pakistan?
A. Dolphin
B. Eagle
C. Markhor
D. Snow Leopard
Which book written by Rachel Carson resulted in banning DDT in USA?
A. Silent spring
B. Sea Around Us
C. Sense of Wonder
D. Limits to Growth
The water (prevention and control) pollution act came into force in the year:
A. 1972
B. 1974
C. 1976
D. 1978
The conference on ‘the human environment” held from 5 to 16 June 1972 was held in:
A. Paris
B. Stockholm
C. London
D. New York
Which of the following is not an inexhaustible form of energy?
A. Water
B. Wind
C. Solar
D. Fossil
Man and biosphere programme is affiliated with:
A. UNICEF
B. Greenpeace
C. UNESCO
D. Club of Rome
The term “ecology” was defined for the first time in 1970 by:
A. Eugene Odum
B. Ernst Haeckel
C. Paul R. Ehrlich
D. H. Reiter
The “Vienna Convention” related with environment is basically related with:
A. Ecosystem and Greenhouse
B. Protection of the Earth
C. Protection of the ozone layer
D. None of these
Which gas has an important role in maintaining atmosphere temperature?
A. Nitrogen
B. Hydrogen
C. Carbon dioxide
D. Oxygen
The outermost zone of a biosphere reserve is:
A. Core zone
B. Buffer zone
C. Manipulation zone
D. None of these
Ecology deals with the study of:
A. Living beings
B. Living and non living components
C. Reciprocal relationship between living and non living components
D. Environment
Energy flow in ecosystem is?
A. Unidirectional
B. Bidirectional
C. Multidirectional
D. None of the above
The source of energy in an ecosystem is?
A. ATP
B. Sunlight
C. D.N.A
D. R.N.A
What is the Definition of ecosystem?
A. The abiotic component of a habitat
B. A community of organisms
C. A community of living organisms and their physical environment
D. The part of the earth and its atmosphere
The final stable community in an ecological succession is called the?
A. Seral community
B. Climax community
C. Final community
D. Ultimate community
A group of individuals of a plant or animal species, inhabiting a given area is called?
A. Population
B. Biome
C. Community
D. Ecosystem
Conservation within the natural habitat is known as?
A. Insitu conservation
B. Invivo conservation
C. Exvivo conservation
D. Exsitu conservation
All from the following are insitu conservation efforts except:
A. National parks
B. Sanctuaries
C. biosphere reserves
D. Zoo
Conservation outside the natural habitat is known as?
A. Insitu conservation
B. Exsitu conservation
C. Invivo conservation
D. Exvivo conservation
The cutting down of trees is termed as ?
A. Forestation
B. Plantation
C. Deforestation
D. biodiversity
The natural place of an organism or community is known as?
A. Niche
B. Biome
C. Habitat
D. Habit
The organisms that live on organic materials and absorb organic molecules by digesting enzymes are called?
A. Decomposers
B. Producers
C. Carnivores
D. Omnivores
Plants are also regarded as?
A. Flora
B. Fauna
C. Flower
D. Botany
Trophic levels are formed by?
A. Only plants
B. only animals
C. Only carnivorous
D. Organisms linked in food chain
The variety among species and within species is classified as?
A. Diversity
B. Deduction
C. Reduction
D. Informatics
Biochemical oxygen demand means?
A. Industrial pollution
B. Air pollution
C. Polluting capacity of effluent
D. Oxygen needed by microbes to decompose organic waste
The main components of photochemical smog is:
A. Sulphur dioxide
B. Water vapour
C. Oxides of nitrogen
D. All of the above
The term Alpha diversity refers to:
A. Species diversity
B. Diversity among the plant
C. Genetic diversity
D. Community and ecosystem diversity
___ is defined as an ecological state of a species being unique to a specific geographic location.
A. Endemic species
B. Ecosystem
C. Exotic species
D. None of these
The Ecological pyramid that is always upright?
A. Pyramid of energy
B. Pyramid of biomass
C. Pyramid of number
D. None of these
Atmospheric ozone layer which protect us from UV-B & C is getting depleted most by addition of?
A. Chloro flurocarbon
B. Carbon monooxide
C. Carbon dioxide
D. Sulpur dioxide
Detritus food chain starts from:
A. Grass
B. Green Plants
C. Dead organic matter
D. Phytoplankton
Who coined the term acid rain?
A. Ernest Flower
B. Robert Angus Smith
C. Christ Ralph
D. Elmer Joseph Clark
The damage caused by acid rain is due to____ nature of acid rain?
A. Protecting
B. Withstanding
C. Balancing
D. Corrosive
Acid rain reacts with marble and limestone to form:
A. Calcium Carbonate
B. calcium Sulphate
C. Calcium Hydroxide
D. None of the above
The ecological pyramid always starts with the following at the base:
A. Producer
B. Consumer
C. Decomposer
D. None of these
Which of the following is a non-renewable resource?
A. Coal
B. Forest
C. Water
D. Wildlife
Chipko movement was started to conserve?
A. Grasslands
B. Soil
C. Forests
D. Deserts
The type of diversity including all the different kinds of living things found in a certain habitat is called as?
A. Species Diversity
B. Genetic Diversity
C. Ecosystem Diversity
D. Population Diversity
A population is a group of?
A. Individual in a family
B. Individuals in a species
C. Communities in an ecosystem
D. Species in a community
The upright pyramid of numbers is absent in?
A. Lake
B. Pond
C. Grasslands
D. Forests
The final stable community in ecological succession is?
A. Climax
B. Pioneer
C. Sere
D. Carnivores
In ecological succession, the intermediate developmental phase is known as?
A. Ecesis
B. Climax
C. Nudation
D. Sere
The process of planting trees, or sowing seeds, in a barren land devoid of any trees to create a forest is called?
A. Deforestation
B. Afforestation
C. Both A & B
D. None of these
Who wrote the book “Hotspots Revisited”?
A. Russell Mittermeier
B. Cristina Mittermeier
C. Norman Myers
D. Olivier Langrend
IMPORTANT: Read General Knowledge MCQs and GK Quizzes for All MCQs Test Preparation online.
Also Read: Environmental protection inspector past papers for online test preparation.
