MCQ Questions and Answers for Class 7 Geography Chapter 1 Environment
Question 1. Deforestation leads to:
a) Increase in biodiversity
b) Reduction in carbon dioxide levels
c) Increase in soil erosion
d) Decrease in global temperatures
Answer:
c) Increase in soil erosion
Question 2. The primary goal of conservation efforts is to:
a) Increase industrial activities
b) Preserve natural habitats and biodiversity
c) Reduce the amount of protected areas
d) Promote urban expansion
Answer:
b) Preserve natural habitats and biodiversity
Question 3. Eutrophication in water bodies is caused by:
a) The decrease in nutrient levels
b) The lack of aquatic life
c) The excessive growth of algae due to nutrient pollution
d) The introduction of exotic species
Answer:
c) The excessive growth of algae due to nutrient pollution
Question 3. What is an ecosystem?
a) A system formed by the interaction of a community of organisms with each other
b) A community of people and their environment
c) A system formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment
d) A geographic area of various species living together
Answer:
c) A system formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment
Question 4. The lithosphere includes:
a) Only the solid crust of the earth
b) The solid crust and the inner core
c) The solid crust, rocks, minerals, and a thin layer of soil
d) Only the minerals found on earth’s surface
Answer:
c) The solid crust, rocks, minerals, and a thin layer of soil
Question 5. Which of the following is not a part of the natural environment?
a) Plants
b) Animals
c) Buildings
d) Water
Answer:
c) Buildings
Question 6. What does the hydrosphere comprise?
a) Only the oceans and seas
b) Rivers, lakes, seas, oceans, and the water vapor in the atmosphere
c) Only freshwater sources
d) Icebergs and glaciers only
Answer:
b) Rivers, lakes, seas, oceans, and the water vapor in the atmosphere
Question 7. The biosphere is defined as:
a) The zone of air around the Earth
b) The zone where land, water, and air interact to support life
c) Only the water bodies on Earth
d) Only the land areas on Earth
Answer:
b) The zone where land, water, and air interact to support life
Question 8. Human environment is indicated by:
a) Only the physical structures humans build
b) The activities, creations, and interactions among human beings
c) The natural landscapes and water bodies
d) The atmosphere and biosphere only
Answer:
b) The activities, creations, and interactions among human beings
Question 9. When is World Environment Day celebrated?
a) April 22
b) June 5
c) March 21
d) December 5
Answer:
b) June 5
Question 10. Which is not a component of the human environment as per the PDF?
a) Land
b) Religion
c) Community
d) Forests
Answer:
d) Forests
Question 11. Which one of the following is not a function of the atmosphere?
a) Provides oxygen for breathing
b) Protects from harmful sun rays
c) Regulates temperature
d) Supplies nutrients for plants
Answer:
d) Supplies nutrients for plants
Question 12. The primary cause of global warming is:
a) Increased plantation
b) Decreased use of fossil fuels
c) Increased levels of carbon dioxide
d) Natural weather patterns
Answer:
c) Increased levels of carbon dioxide
Question 13. Which of the following is a renewable source of energy?
a) Coal
b) Petroleum
c) Solar energy
d) Natural gas
Answer:
c) Solar energy
Question 14. The process of water cycle involves:
a) Evaporation, condensation, and precipitation
b) Filtration, evaporation, and desalination
c) Condensation, precipitation, and collection
d) Evaporation, condensation, precipitation, and infiltration
Answer:
d) Evaporation, condensation, precipitation, and infiltration
Question 15. Sustainable development aims to:
a) Increase the use of natural resources
b) Meet the needs of the present without compromising the ability of future generations to meet their own needs
c) Promote the use of non-renewable energy sources
d) Focus only on economic growth
Answer:
b) Meet the needs of the present without compromising the ability of future generations to meet their own needs
Question 16. Biodiversity is important for ecosystems because it:
a) Decreases the resilience of ecosystems
b) Provides humans with recreational spaces
c) Increases the ecosystem’s productivity and ability to withstand changes
d) Limits the number of species within an ecosystem
Answer:
c) Increases the ecosystem’s productivity and ability to withstand changes
Question 17. The main reason for water scarcity is:
a) Overabundance of freshwater sources
b) Uneven distribution of water resources
c) Too much rainfall
d) The abundance of desalination plants
Answer:
b) Uneven distribution of water resources
Question 18. The greenhouse effect is caused by:
a) The trapping of heat by certain gases in the atmosphere
b) The reflection of sunlight by polar ice caps
c) The decrease in industrial activities
d) The increase in plantation activities
Answer:
a) The trapping of heat by certain gases in the atmosphere
Question 19. Acid rain is primarily caused by:
a) The release of sulfur and nitrogen compounds into the atmosphere
b) Natural soil erosion
c) Organic farming practices
d) The planting of more trees
Answer:
a) The release of sulfur and nitrogen compounds into the atmosphere
Question 20. Ozone layer depletion is mainly due to:
a) Carbon dioxide emissions
b) Methane emissions
c) Chlorofluorocarbons (CFCs)
d) Water vapor
Answer:
c) Chlorofluorocarbons (CFCs)
Question 21. The term ‘environment’ is derived from a French word meaning:
a) Surrounding
b) To envelop
c) Nature
d) Interaction
Answer:
a) Surrounding
Question 22. Which of the following is considered a biotic component of the environment?
a) Water
b) Soil
c) Plants
d) Air
Answer:
c) Plants
Question 23. The primary source of energy in an ecosystem is:
a) Wind
b) Water
c) Sun
d) Soil
Answer:
c) Sun
Question 24. What percentage of the earth’s surface is covered by the hydrosphere?
a) 50%
b) 61%
c) 71%
d) 80%
Answer:
c) 71%
Question 25. Which layer of the atmosphere is closest to the Earth?
a) Stratosphere
b) Troposphere
c) Mesosphere
d) Thermosphere
Answer:
b) Troposphere
Question 26. The process by which water continually changes its form and circulates between oceans, atmosphere, and land is known as:
a) The water cycle
b) Evaporation
c) Precipitation
d) Condensation
Answer:
a) The water cycle
Question 27. Which gas is most responsible for the greenhouse effect?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer:
b) Carbon dioxide
Question 28. Deforestation leads to:
a) Increased rainfall
b) Decreased soil fertility
c) More agricultural land
d) Improved air quality
Answer:
b) Decreased soil fertility
Question 29. What is biodiversity?
a) The uniformity of life forms
b) Variation among organisms from all sources
c) Decrease in the number of species
d) Increase in the number of habitats
Answer:
b) Variation among organisms from all sources
Question 30. Sustainable development aims to:
a) Increase the use of natural resources
b) Meet the needs of the present without compromising the ability of future generations
c) Promote technology over nature
d) Prioritize economic growth over environmental protection
Answer:
b) Meet the needs of the present without compromising the ability of future generations
Question 31. Which of the following is not a renewable resource?
a) Solar energy
b) Coal
c) Wind energy
d) Water
Answer:
b) Coal
Question 32. The main cause of soil erosion is:
a) Afforestation
b) Deforestation
c) Overgrazing
d) Urbanization
Answer:
b) Deforestation
Question 33. Acid rain is caused by:
a) Nitrogen and oxygen
b) Carbon dioxide and nitrogen
c) Sulphur dioxide and nitrogen oxides
d) Hydrogen and carbon dioxide
Answer:
c) Sulphur dioxide and nitrogen oxides
Question 34. The term ‘smog’ is a combination of:
a) Smoke and fog
b) Soil and fog
c) Smoke and air
d) Soil and air
Answer:
a) Smoke and fog
Question 35. Global warming refers to:
a) Cooling of the earth’s surface
b) Increase in the earth’s average surface temperature
c) Decrease in the earth’s average surface temperature
d) Stabilization of the earth’s climate
Answer:
b) Increase in the earth’s average surface temperature
Fill-in-the-blanks and True or false MCQ Questions for Class 7 Geography – Environment
Fill-in-the-blank questions
Question 1. The ___________ is the layer of the atmosphere closest to the Earth, where most of the weather phenomena occur.
Answer:
Troposphere
Question 2. The main cause of global warming is the increase in ___________ gases in the atmosphere.
Answer:
greenhouse
Question 3. World Environment Day is celebrated on ___________ 5th every year.
Answer:
June
Question 4. ___________ is the term used to describe the variety of life forms on Earth.
Answer:
Biodiversity
Question 5. The process by which water vapor turns into liquid water is known as ___________.
Answer:
condensation
Question 6. ___________ resources are those that can be replenished naturally over time.
Answer:
Renewable
True or false questions
Question 1. Deforestation leads to increased rainfall. (True/False)
Answer:
False
Question 2. The lithosphere includes only the solid crust of the Earth. (True/False)
Answer:
False
Question 3. Solar energy is a non-renewable resource. (True/False)
Answer:
False
Question 4. The biosphere is the zone where land, water, and air interact to support life. (True/False)
Answer:
True
Question 5. Acid rain is primarily caused by carbon dioxide and nitrogen. (True/False)
Answer:
False
Question 6. Sustainable development aims to prioritize economic growth over environmental protection. (True/False)
Answer:
False
