Start learning →

CBSE Class 10 Environmental & Disaster Management — practice questions

Explore 81 free Environmental & Disaster Management questions in CBSE Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.

Practise Environmental & Disaster Management with Quill →

Environmental & Disaster Management questions and exercises with answers

Showing questions 1–30 of 81.

Which of the following is a DECOMPOSER in a typical ecosystem?Read the answer and worked solution →The ozone layer protects life on Earth by:Read the answer and worked solution →Which of the following is BIODEGRADABLE waste?Read the answer and worked solution →The principle of '3 R's' for environmental conservation refers to:Read the answer and worked solution →Pop only the acids.Read the answer and worked solution →Swipe each substance to Acidic or Basic.Read the answer and worked solution →Match each plant hormone to its main role.Read the answer and worked solution →Balance the thermal decomposition of KClO₃.Read the answer and worked solution →Balance the electrolysis of water.Read the answer and worked solution →Balance the lead-iodide precipitation.Read the answer and worked solution →Balance the photo-decomposition of silver bromide.Read the answer and worked solution →CLASS10 · Physics · Renewable or Non-renewable SourceRead the answer and worked solution →CLASS10 · Biology · Food Chain — Tap in OrderRead the answer and worked solution →Match the trophic level to its role (CBSE Cl 10)Read the answer and worked solution →True or false on ecosystems (CBSE Cl 10)Read the answer and worked solution →Which of the following is a renewable source of energy?Read the answer and worked solution →Which is a fossil fuel?Read the answer and worked solution →In a hydroelectric power plant, the energy conversion sequence is:Read the answer and worked solution →Biogas is mainly composed of:Read the answer and worked solution →Which is the principal source of energy on Earth?Read the answer and worked solution →Solar cells convert solar energy directly into:Read the answer and worked solution →A good fuel should NOT:Read the answer and worked solution →A solar cooker uses a black painted box because black:Read the answer and worked solution →The role of the glass sheet in a solar cooker is to:Read the answer and worked solution →Why are reflectors used in a solar cooker?Read the answer and worked solution →Wind energy can be harnessed if the wind speed at the location is at least about:Read the answer and worked solution →The chief environmental drawback of nuclear fission is:Read the answer and worked solution →Charcoal is preferred over wood as a fuel because charcoal:Read the answer and worked solution →Which of the following is NOT a non-conventional source?Read the answer and worked solution →Slurry left over after biogas production is useful because:Read the answer and worked solution →

Worked practice questions

Which of the following is a DECOMPOSER in a typical ecosystem?

  1. Tiger in a forest food chain ecosystem
  2. Mango tree in a garden ecosystem
  3. Bacteria breaking dead leaves in soil
  4. Wheat plant in a Punjab field farm
Show answer and solution

Correct answer: C. Bacteria breaking dead leaves in soil

Decomposers break down dead organic matter into simple compounds, recycling nutrients to soil. Bacteria and fungi are the main decomposers.

Open this question →

The ozone layer protects life on Earth by:

  1. Reflecting visible sunlight back into space at noon
  2. Holding Earth's heat through the greenhouse effect
  3. Generating breathable oxygen continuously each day
  4. Blocking harmful UV-B and UV-C radiation from the Sun
Show answer and solution

Correct answer: D. Blocking harmful UV-B and UV-C radiation from the Sun

Ozone in the stratosphere blocks harmful UV-B and UV-C radiation. Without it, skin cancer, cataracts, and ecological damage would surge.

Open this question →

Which of the following is BIODEGRADABLE waste?

  1. Plastic bags and disposable bottles
  2. Glass containers and aluminium cans
  3. Vegetable peels and dry tree leaves
  4. Mercury-bearing batteries and CFL lamps
Show answer and solution

Correct answer: C. Vegetable peels and dry tree leaves

Biodegradable waste is broken down by microorganisms: vegetable peels, tree leaves, paper, cloth, kitchen waste. Plastic, glass, metals and batteries are non-biodegradable.

Open this question →

How to practise

  1. Choose a Environmental & Disaster Management question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Environmental & Disaster Management practice for CBSE Class 10. Read explanations as you go. No signup form needed to start.

Practise Environmental & Disaster Management →

More Science topics

Refraction of Light and LensesEffects of Electric CurrentChemical Reactions and EquationsLife Processes in Living Organisms Part 2Life Processes in Living Organisms Part 1Metals and Non-metalsAcids, Bases and SaltsCarbon Compounds