1. When vapours of a substance are cooled and changes into liquid, it is called?

2. Short-sight defect could be corrected by a?

3. The boiling point of alcohol is?

4. Red + Green + Blue = ?

5. If we add all the 7 colours of rainbow (red, yellow, blue, green, orange, violet and indigo), the resultant colour would be?

6. There are __________ planets in orbit around the Sun?

7. The presence of impurities __________ the freezing point of water?

8. An instrument used to measure gas pressure is called?

9. If we add salt to the pure water, its boiling point will?

10. A camera uses a __________ to form an image on a piece of film at the back?

11. The distance of Moon from the Earth is __________ km?

12. Ozone layer protects the Earth from __________ radiations from the Sun?

13. Planets are kept in orbit by the?

14. Which from the following is NOT a Renewable Energy?

15. When white light passes through a prism, it splits into __________ colors.