Section A – True/False (1 mark each × 10 = 10 marks)

Q1. Water vapour can be seen with the naked eye.
Q2. Condensation causes water to change into vapour.
Q3. Dew is formed due to condensation.
Q4. Fans slow down the process of evaporation.
Q5. Melting is a process where solid turns into liquid.
Q6. Water vapour spreads in all directions.
Q7. Ice has a fixed shape, while water does not.
Q8. Water boils at 0°C.
Q9. The water cycle is a reversible process.
Q10. Rain formation is related to the process of condensation.

Section B – Multiple Choice Questions (1 mark each × 10 = 10 marks)

Q11. Which process changes water into vapour?
(a) Condensation
(b) Melting
(c) Freezing
(d) Evaporation

Q12. Which factor increases the rate of evaporation?
(a) Humid air
(b) Cold temperature
(c) Wind or fan
(d) Small surface area

Q13. What is the gaseous form of water?
(a) Steam
(b) Rain
(c) Fog
(d) Ice

Q14. Which process forms dew drops on plants?
(a) Boiling
(b) Condensation
(c) Evaporation
(d) Melting

Q15. Which of the following is the solid state of water?
(a) Steam
(b) Ice
(c) Rain
(d) Water vapour

Q16. Water cycle includes which of the following processes?
(a) Condensation
(b) Evaporation
(c) Precipitation
(d) All of the above

Q17. Why does water from matkas feel cool?
(a) Due to freezing
(b) Due to condensation
(c) Due to evaporation
(d) Due to absorption

Q18. What is responsible for cloud formation?
(a) Rainfall
(b) Freezing
(c) Condensation of water vapour
(d) Boiling of oceans

Q19. Which state of water can flow and take the shape of the container?
(a) Solid
(b) Gas
(c) Liquid
(d) Ice

Q20. Which method helps in increasing evaporation?
(a) Decreasing temperature
(b) Decreasing surface area
(c) Covering the liquid
(d) Using a fan

Section C – One Mark Questions (1 mark each × 10 = 10 marks)

Q21. Name the process by which water vapour turns into liquid.
Q22. What is the boiling point of water?
Q23. Write one factor that affects evaporation.
Q24. Which form of water is found in clouds?
Q25. Define freezing.
Q26. Name one natural solid form of water.
Q27. What is the role of the sun in the water cycle?
Q28. Why do clothes dry faster on windy days?
Q29. Write one use of evaporation in daily life.
Q30. What is the liquid state of water called?

Section D – Two Mark Questions (2 marks each × 5 = 10 marks)

Q31. What is condensation? Give one example from daily life.
Q32. List two factors that affect the rate of evaporation.
Q33. Why does an earthen pot keep water cool in summer?
Q34. State two properties of ice as a solid.
Q35. How can you show that water vapour is present in the air?

Section E – Higher Order Thinking Skills (HOTS)/Application (3 marks each × 3 = 6 marks)

Q36. Why is water sprinkled on the roofs or roads during hot afternoons in summer?
Q37. If there were no condensation, what would happen to the water cycle?
Q38. A student notices water droplets on the bathroom mirror after a hot shower. Explain the phenomenon using concepts from this chapter.