15 extra multiple-choice questions for Environmental Management (10th Standard Science, Samacheer Kalvi), beyond the ones printed in the textbook — each with the correct option highlighted and a clear, worked explanation. Free to read in English and Tamil.
Q1
Deforestation leads to a decrease in
- A. rainfallCorrect
- B. soil erosion
- C. global temperature
- D. carbon dioxide
Explanation. Forests return water vapour to the air and help clouds form, so clearing them reduces rainfall. Deforestation actually increases soil erosion rather than reducing it.
Q2
The removal of soil particles from the land is called
- A. Soil erosionCorrect
- B. Afforestation
- C. Sedimentation
- D. Deforestation
Explanation. Soil erosion is the removal of the top layer of soil particles by wind or water. Once the fertile layer is gone, the land supports far less plant growth.
Q3
The Chipko movement was initiated against
- A. deforestationCorrect
- B. rainwater harvesting
- C. afforestation
- D. biogas production
Explanation. The Chipko movement began as a protest against the felling of trees, with villagers embracing the trunks to prevent it. It is a landmark in forest conservation.
Q4
The biosphere reserve located in Tamil Nadu is
- A. NilgiriCorrect
- B. Sundarbans
- C. Nanda Devi
- D. Great Nicobar
Explanation. The Nilgiri Biosphere Reserve lies in Tamil Nadu and was the first biosphere reserve established in India. The others lie in different states.
Q5
Tidal energy is which type of energy?
- A. RenewableCorrect
- B. Non renewable
- C. Fossil
- D. Nuclear
Explanation. Tides are produced by the moon's pull and recur without end, so tidal energy is a renewable source. Fossil and nuclear fuels exist in fixed quantities.
Q6
Which of the following is a non renewable source of energy?
- A. Solar energy
- B. CoalCorrect
- C. Wind energy
- D. Tidal energy
Explanation. Coal takes millions of years to form and cannot be replaced once burned, so it is non renewable. Solar, wind and tidal energy are continually renewed.
Q7
Discarded electrical and electronic devices are known as
- A. E-wasteCorrect
- B. Solid waste
- C. Sewage
- D. Biomedical waste
Explanation. Electronic waste, shortened to e-waste, is made up of discarded electrical and electronic goods. It often carries lead and other heavy metals.
Q8
The gas mainly responsible for acid rain is
- A. Oxygen
- B. Sulphur dioxideCorrect
- C. Nitrogen
- D. Helium
Explanation. Sulphur dioxide released from burning fuels dissolves in rain water to form acid, which is why it is the gas chiefly linked with acid rain.
Q9
Collecting and storing rain water for later use is called
- A. Rain water harvestingCorrect
- B. Afforestation
- C. Sewage treatment
- D. Recycling
Explanation. Rain water harvesting collects and stores rain water, and it also allows water to soak into the ground and raise the level of the water table.
Q10
Which gas is produced when organic waste decomposes in the absence of air?
- A. Bio-gasCorrect
- B. Oxygen
- C. Nitrogen
- D. Ozone
Explanation. Bio-gas is produced when organic waste such as cattle dung decomposes without air. It is a renewable fuel and is listed among the alternative energy resources.
Q11
The 4R approach to conserving natural resources does NOT include
- A. Reduce
- B. Reuse
- C. Recycle
- D. RemoveCorrect
Explanation. The approach is built on reducing, reusing, recycling and recovering. Removal is not part of it, because the aim is to keep material in use rather than discard it.
Q12
Which of the following is an example of a non conventional source of energy?
- A. Coal
- B. Petroleum
- C. Solar energyCorrect
- D. Firewood
Explanation. Solar energy is a non conventional source, used through newer technology. Coal, petroleum and firewood have all been used conventionally for a long time.
Q13
Waste water discharged from homes and carrying human waste is called
- A. SewageCorrect
- B. E-waste
- C. Biogas
- D. Compost
Explanation. Sewage is the waste water released from homes. It must be treated before release, since untreated sewage pollutes rivers and spreads disease.
Q14
Vegetable peels and other domestic organic wastes are best disposed of by
- A. burning in the open
- B. compostingCorrect
- C. throwing into a river
- D. burying in plastic bags
Explanation. Organic domestic waste decomposes naturally, so composting turns it into manure. Burning and dumping in water both pollute instead of using the waste.
Q15
The act passed to protect wild life in India was established in
- A. 1962
- B. 1972Correct
- C. 1982
- D. 1992
Explanation. The Wild Life Protection Act was established in 1972. It works alongside the Forest Conservation Act in the conservation of natural resources.
About these Environmental Management questions
These are the Additional multiple-choice questions for Environmental Management from the Tamil Nadu State Board (Samacheer Kalvi) 10th Standard Science syllabus. Each question shows the correct option and an original, step-by-step explanation so you understand the method, not just the answer. Use the answer key above to jump to any question, then take the practice test to check yourself under exam-like conditions.
Frequently asked questions
How many MCQs are there in Environmental Management?
This chapter has 15 book-back multiple-choice questions, each with the correct answer and a step-by-step explanation.
Are these 10th Standard Science MCQs free to practise online?
Yes. Every question, answer and explanation here is free, and you can also take them as a timed practice test.
Where can I find the Environmental Management book-back answers?
The correct option for each question is highlighted on this page with a worked explanation, plus a quick answer-key summary at the top.
