Pollution Quiz - CBSE Class 6 Science

Free practice quiz: Pollution (CBSE Class 6 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is pollution?

   1. Addition of harmful substances
   2. Removal of waste
   3. Planting trees
   4. Clearing forests
   Show answer

   Answer: A. Addition of harmful substances

   Pollution refers to the addition of harmful substances into our environment, which can damage ecosystems and affect health.

2. What is the primary source of land pollution?

   1. Littering
   2. Recycling
   3. Planting trees
   4. Natural decomposition
   Show answer

   Answer: A. Littering

   Littering leads to land pollution as it introduces waste materials that can contaminate the soil.

3. What is the effect of acid rain?

   1. It nourishes plants
   2. It harms aquatic life
   3. It improves air quality
   4. It has no effect
   Show answer

   Answer: B. It harms aquatic life

   Acid rain can lower the pH of water bodies, harming aquatic life and disrupting ecosystems.

4. What are bioindicators?

   1. Non-living indicators
   2. Living organisms that indicate environmental health
   3. Synthetic materials
   4. Pollutants in water
   Show answer

   Answer: B. Living organisms that indicate environmental health

   Bioindicators are living organisms used to assess the health of an environment, often useful in studying pollution levels.

5. What is an example of thermal pollution?

   1. Warm water from factories in rivers
   2. Oil spills
   3. Plastic waste
   4. None of the above
   Show answer

   Answer: A. Warm water from factories in rivers

   Thermal pollution occurs when industries discharge warm water into rivers, disrupting aquatic ecosystems.

More quizzes

• Types of Pollution
• Conservation of the Environment

Browse all Our Environment quizzes