Water Quiz - CBSE Class 5 Science

Free practice quiz: Water (CBSE Class 5 Science). 19 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the primary source of water on Earth?

   1. Oceans
   2. Rivers
   3. Lakes
   4. Rain
   Show answer

   Answer: A. Oceans

   Oceans are the largest and primary source of water on Earth, covering about 71% of the Earth's surface.

2. What happens during condensation?

   1. Water vapor cools and becomes liquid
   2. Water heats up and forms vapor
   3. Water freezes into ice
   4. Water mixes with air
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   Answer: A. Water vapor cools and becomes liquid

   Condensation occurs when water vapor loses energy and turns into a liquid, like when clouds form.

3. How does water move from plants to the atmosphere?

   1. Photosynthesis
   2. Osmosis
   3. Transpiration
   4. Condensation
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   Answer: C. Transpiration

   Transpiration is the process by which water evaporates from plant leaves into the atmosphere.

4. What is the primary cause of acid rain?

   1. Burning fossil fuels
   2. Clear skies
   3. Plant growth
   4. Water pollution
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   Answer: A. Burning fossil fuels

   Acid rain is primarily caused by emissions from burning fossil fuels that react with water in the atmosphere.

5. What is the role of wetlands in water purification?

   1. Polluting water
   2. Increasing salinity
   3. Filtering pollutants
   4. Blocking sunlight
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   Answer: C. Filtering pollutants

   Wetlands act as natural filters, trapping pollutants and purifying water before it enters rivers and lakes.

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