Chapter-24 Man and Environment — Online MCQ Test
SOCIAL · Samacheer Kalvi 9th · Tamil Nadu State Board
Practice Chapter-24 Man and Environment with a free chapter-wise online MCQ test.
This chapter covers: Description Examines environmental issues human activities and sustainable management Keywords Global Warming Deforestation Carbon Footprint Sustainable Living.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-24 Man and Environment — Important Questions & Answers
What is meant by "environment"?
- A. Only the natural forests and rivers
- B. The surroundings in which living beings live and interact
- C. Only the climate of a place
- D. Only human-made buildings and roads
Answer: B. The surroundings in which living beings live and interact
Environment includes all the surrounding natural and human-made conditions that affect living organisms. It is not limited to only one part such as climate or forests.
Environment includes all the surrounding natural and human-made conditions that affect living organisms. It is not limited to only one part such as climate or forests.
Which of the following is a major cause of deforestation?
- A. Planting more trees
- B. Expansion of agriculture and industries
- C. Rainwater harvesting
- D. Using public transport
Answer: B. Expansion of agriculture and industries
Forests are cleared mainly for agriculture, industries, roads, and settlements. These activities reduce forest cover.
Forests are cleared mainly for agriculture, industries, roads, and settlements. These activities reduce forest cover.
Global warming is mainly caused by the increase of which gas in the atmosphere?
- A. Oxygen
- B. Carbon dioxide
- C. Nitrogen
- D. Helium
Answer: B. Carbon dioxide
Carbon dioxide is a major greenhouse gas that traps heat in the atmosphere. Its increase contributes to global warming.
Carbon dioxide is a major greenhouse gas that traps heat in the atmosphere. Its increase contributes to global warming.
A region has been facing more floods after large-scale tree cutting. What is the most likely reason?
- A. Trees prevent air from moving
- B. Loss of trees reduces soil holding and water absorption
- C. Trees increase flood water directly
- D. Floods happen only because of temperature
Answer: B. Loss of trees reduces soil holding and water absorption
Trees help the soil absorb water and reduce runoff. When forests are removed, rainwater flows quickly and can cause floods.
Trees help the soil absorb water and reduce runoff. When forests are removed, rainwater flows quickly and can cause floods.
A person uses public transport, avoids plastic, and plants trees regularly. What is the main environmental benefit of these actions?
- A. They increase carbon footprint
- B. They help reduce pollution and conserve resources
- C. They stop all climate change immediately
- D. They are useful only for urban areas
Answer: B. They help reduce pollution and conserve resources
These actions reduce emissions, save resources, and support a healthier environment. They are simple ways to practice sustainable living.
These actions reduce emissions, save resources, and support a healthier environment. They are simple ways to practice sustainable living.