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Environment MCQ & Objective Questions

The study of the environment is crucial for students preparing for school and competitive exams. Understanding environmental concepts not only enhances your knowledge but also helps in scoring better. Practicing MCQs and objective questions related to the environment allows you to grasp important topics effectively, making your exam preparation more efficient. With a focus on practice questions, you can tackle important questions with confidence.

What You Will Practise Here

  • Fundamentals of Ecology and Ecosystems
  • Types of Natural Resources and Their Conservation
  • Environmental Pollution: Causes and Effects
  • Climate Change and Global Warming
  • Biodiversity and Its Importance
  • Environmental Laws and Policies in India
  • Renewable and Non-Renewable Energy Sources

Exam Relevance

The topic of the environment is significant in various examinations such as CBSE, State Boards, NEET, and JEE. Questions often focus on the impact of human activities on the environment, conservation methods, and ecological principles. Common question patterns include multiple-choice questions that test your understanding of definitions, causes, and effects related to environmental issues. By mastering these concepts, you can enhance your performance in these competitive exams.

Common Mistakes Students Make

  • Confusing terms like 'biodegradable' and 'non-biodegradable'
  • Misunderstanding the causes and effects of pollution
  • Overlooking the significance of biodiversity
  • Neglecting the impact of climate change on ecosystems

FAQs

Question: What are some important Environment MCQ questions I should focus on?
Answer: Focus on questions related to pollution types, conservation methods, and ecological relationships for a well-rounded understanding.

Question: How can I improve my performance in Environment objective questions?
Answer: Regular practice of MCQs and reviewing key concepts will significantly enhance your performance.

Start solving practice MCQs today to test your understanding of the environment and boost your exam readiness. Remember, consistent practice is the key to success!

Q. If a coral reef ecosystem has a growth rate of 2% per year and currently has 500 corals, how many corals will there be after 2 years?
  • A. 520
  • B. 525
  • C. 540
  • D. 550
Q. If a coral reef ecosystem loses 10% of its coral cover each year due to bleaching, how much coral cover remains after 3 years if it starts with 100%?
  • A. 70%
  • B. 72.9%
  • C. 73%
  • D. 75%
Q. If a factory emits 1200 kg of CO2 per day, how much CO2 will it emit in 30 days?
  • A. 36000 kg
  • B. 30000 kg
  • C. 24000 kg
  • D. 18000 kg
Q. If a factory emits 1200 kg of CO2 per day, how much CO2 will it emit in a week?
  • A. 8400 kg
  • B. 10000 kg
  • C. 12000 kg
  • D. 15000 kg
Q. If a forest ecosystem has 200 trees and 50% of them are oak trees, how many oak trees are there?
  • A. 100
  • B. 80
  • C. 50
  • D. 200
Q. If a forest ecosystem has 200 trees and each tree produces 50 kg of oxygen per year, how much oxygen does the forest produce annually?
  • A. 5000 kg
  • B. 10000 kg
  • C. 15000 kg
  • D. 20000 kg
Q. If a forest ecosystem has 200 trees and each tree produces 50 kg of oxygen per year, how much oxygen does the entire forest produce annually?
  • A. 5000 kg
  • B. 10000 kg
  • C. 15000 kg
  • D. 20000 kg
Q. If a habitat loses 10% of its area each year due to deforestation, how much area will remain after 3 years if it started with 200 hectares?
  • A. 162 hectares
  • B. 170 hectares
  • C. 180 hectares
  • D. 190 hectares
Q. If a habitat loses 10% of its biodiversity each year due to pollution, how much biodiversity remains after 3 years if it starts with 100 species?
  • A. 70.4
  • B. 72.9
  • C. 73.5
  • D. 75.0
Q. If a habitat loses 25% of its biodiversity, and originally had 120 species, how many species remain?
  • A. 80
  • B. 85
  • C. 90
  • D. 95
Q. If a household uses 250 liters of water per day, how much water will it use in a month (30 days)?
  • A. 6000 liters
  • B. 7500 liters
  • C. 8000 liters
  • D. 9000 liters
Q. If a household uses 300 liters of water per day, how much water will it use in a month (30 days)?
  • A. 6000 liters
  • B. 9000 liters
  • C. 7500 liters
  • D. 12000 liters
Q. If a lake has 200 species of fish and 15% are invasive species, how many invasive species are there?
  • A. 25
  • B. 30
  • C. 35
  • D. 40
Q. If a marine ecosystem has 500 fish and 30% of them are herbivores, how many herbivorous fish are there?
  • A. 150
  • B. 200
  • C. 100
  • D. 250
Q. If a national park covers an area of 1500 square kilometers and 25% of it is designated for conservation, what area is designated for conservation?
  • A. 300
  • B. 400
  • C. 500
  • D. 600
Q. If a plant species can grow in 5 different types of soil, and each type of soil can support 4 different plant species, how many total plant species can be supported?
  • A. 5
  • B. 10
  • C. 20
  • D. 25
Q. If a plastic bottle takes 450 years to decompose, how many years will it take for 5 bottles to decompose?
  • A. 450 years
  • B. 2250 years
  • C. 900 years
  • D. 1800 years
Q. If a plastic bottle takes 450 years to decompose, how many years will it take for 5 bottles?
  • A. 2250 years
  • B. 450 years
  • C. 900 years
  • D. 1350 years
Q. If a plastic bottle takes 450 years to decompose, how many years will it take for 10 bottles?
  • A. 450 years
  • B. 900 years
  • C. 4500 years
  • D. 45000 years
Q. If a solar panel generates 300 watts of power per hour, how much power will it generate in 5 hours?
  • A. 1200 watts
  • B. 1500 watts
  • C. 1800 watts
  • D. 2000 watts
Q. If a solar panel generates 300 watts per hour, how much energy does it generate in 5 hours?
  • A. 1500 watts
  • B. 1200 watts
  • C. 1800 watts
  • D. 1000 watts
Q. If a solar panel generates 300 watts per hour, how much energy will it generate in 5 hours?
  • A. 1500 watts
  • B. 1200 watts
  • C. 1800 watts
  • D. 2000 watts
Q. If a solar panel generates 300 watts per hour, how much energy will it generate in 10 hours?
  • A. 3000 watts
  • B. 3000 kWh
  • C. 3000 J
  • D. 3000 kW
Q. If a tree absorbs 22 kg of CO2 per year, how many trees are needed to absorb 1100 kg of CO2?
  • A. 45 trees
  • B. 50 trees
  • C. 55 trees
  • D. 60 trees
Q. If a tree absorbs 22 kg of CO2 per year, how many trees are needed to absorb 1100 kg of CO2 in a year?
  • A. 45 trees
  • B. 50 trees
  • C. 55 trees
  • D. 60 trees
Q. If a tree absorbs 50 kg of CO2 per year, how many trees are needed to absorb 2000 kg of CO2 in a year?
  • A. 30 trees
  • B. 40 trees
  • C. 50 trees
  • D. 20 trees
Q. If a tree absorbs 50 kg of CO2 per year, how much CO2 will 5 such trees absorb in 4 years?
  • A. 1000 kg
  • B. 800 kg
  • C. 200 kg
  • D. 400 kg
Q. If a wetland ecosystem can filter 200 liters of water per hour, how many liters can it filter in a day?
  • A. 2400 liters
  • B. 4800 liters
  • C. 5000 liters
  • D. 6000 liters
Q. If a wildlife reserve has 250 animals and the population increases by 10% each year, how many animals will there be after 2 years?
  • A. 275
  • B. 300
  • C. 305
  • D. 315
Q. If a wind turbine generates 1.5 MW of power, how much power will it generate in 24 hours?
  • A. 36 MWh
  • B. 24 MWh
  • C. 48 MWh
  • D. 12 MWh
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