CBSE Class 6 Science Nature’s Treasures (Class 6 NCERT New) Quiz 1

1. What is the composition of air?

A Air contains 40% nitrogen, 40% oxygen, and 20% other gases. B Air is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases. C Air is made up of 60% oxygen, 30% carbon dioxide, and 10% other gases. D Air consists of 50% nitrogen, 30% oxygen, and 20% other gases.

2. What does the windmills used to generate electricity?

A Wind energy is converted into electricity. B Windmills convert water into electricity. C Wind energy is stored in batteries. D Windmills produce solar energy.

3. What is the primary greenhouse gas emitted by human activities?

A Ozone (O3) B Carbon dioxide (CO2) C Methane (CH4) D Nitrous oxide (N2O)

4. How do plants primarily obtain energy?

A By consuming soil nutrients B From water absorption C Through photosynthesis D By absorbing carbon dioxide

5. What is the main source of renewable energy?

A Fossil fuels B Nuclear energy C Solar energy D Geothermal energy

6. Why is the village near the Western Ghats described as a place with many natural treasures?

A It has tall buildings, busy markets, and many vehicles B It has factories producing goods and bright city lights C It has few trees, dry land, and rare animal sightings D It has fresh air, fertile soil, streams, and diverse living beings

7. Which statement best explains why taking deep breaths during a breathing exercise can help you stay healthy?

A It stops the heart so the lungs can fully rest B It stores extra air in the stomach for later use C It brings more fresh air with oxygen into the lungs D It pushes more carbon dioxide into the lungs for energy

8. Look at the colored square grid showing the composition of air. Which gas takes up the greatest number of squares in the grid?

A Argon takes the most squares B Carbon dioxide takes the most squares C Oxygen takes the most squares D Nitrogen takes the most squares

9. Study the step-by-step images for making a firki (pinwheel). What causes the firki to rotate when you run while holding it?

A Force of moving air B Weight of the paper C Friction with the stick D Heat from your hands

10. What is the main purpose of rainwater harvesting in homes and buildings?

A To store rainwater for later safe use B To replace all groundwater with rain C To increase rainfall during dry seasons D To clean polluted rivers and lakes