Our Environment Quiz - CBSE Class 10 Science

Free practice quiz: Our Environment (CBSE Class 10 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is a biodegradable waste?

   1. Plastic
   2. Glass
   3. Wood
   4. Metal
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   Answer: C. Wood

   Wood is an organic material that decomposes naturally, making it biodegradable.

2. What term is used to describe the variety of life on Earth?

   1. Ecology
   2. Biodiversity
   3. Biome
   4. Population
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   Answer: B. Biodiversity

   Biodiversity refers to the variety of all life forms on Earth.

3. What is biomagnification?

   1. The increase in biomass
   2. The increase in population
   3. The increase in toxin concentration in organisms
   4. The decrease in carbon levels
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   Answer: C. The increase in toxin concentration in organisms

   Biomagnification is the process where the concentration of toxins increases as they move up the food chain.

4. How does a food chain differ from a food web?

   1. Food chains are complex while food webs are simple
   2. Food webs consist of multiple interconnected chains
   3. Food chains have no energy transfer
   4. Food webs only involve plants
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   Answer: B. Food webs consist of multiple interconnected chains

   A food web is a system of interconnected food chains, showing multiple energy pathways in an ecosystem.

5. What trophic level are herbivores assigned to?

   1. Producers
   2. Primary consumers
   3. Secondary consumers
   4. Tertiary consumers
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   Answer: B. Primary consumers

   Herbivores are primary consumers as they feed directly on producers (plants).

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