Class 6 Science Chapter 8 MCQs – A Journey Through States of Water
Class 6 Science Chapter 8 MCQs for “A Journey Through States of Water” (based on NCERT textbook Curiosity ).
MCQ with Answers for Practice – Chapter 8 – A Journey Through States of Water
This includes All types of MCQs normally asked in school exams, tests, and NCERT exercises.
MCQs – Chapter 8: A Journey Through States of Water
Section A – States of Water (Ice, Water, Vapour)
1. Ice and water are actually:
a) Two different substances
b) Two forms of the same substance
c) Water mixed with air
d) A mixture of water and salt
Answer: b – Ice and water are the same substance in different states.
2. Ice feels hard because:
a) It contains salt
b) It is very cold
c) It is the solid form of water
d) It contains chemicals
Answer: c – Ice is hard because it is solid water.
3. Water cannot be held like ice because:
a) It is hot
b) It is a liquid and flows
c) It is invisible
d) It disappears
Answer: b – Water flows, so it cannot be held like a solid.
4. When ice melts, it forms:
a) Water vapour
b) Water
c) Steam
d) Snow
Answer: b – Melting of ice produces water.
5. Which one is a correct statement?
a) Ice splashes but water does not
b) Ice flows but water does not
c) Water flows but ice does not
d) Ice and water both flow
Answer: c – Water flows; ice does not.
Section B – Evaporation
6. The process by which water changes into vapour is:
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: c – Evaporation converts liquid water to vapour.
7. Water in puddles disappears mainly due to:
a) Melting
b) Evaporation
c) Absorption by clouds
d) Burning
Answer: b – Puddle water evaporates into the air.
8. Evaporation occurs:
a) Only at night
b) Only when boiling
c) Only in summer
d) At all temperatures
Answer: d – Evaporation happens at room temperature too.
9. Sprinkled water disappearing from a hot pan is due to:
a) Freezing
b) Melting
c) Evaporation
d) Condensation
Answer: c – Heat causes rapid evaporation.
10. Hand sanitiser disappears because:
a) It burns
b) It evaporates
c) It freezes
d) It dissolves in air
Answer: b – Alcohol evaporates quickly.
11. Which of these increases evaporation?
a) Cold weather
b) Less surface area
c) More surface area
d) Keeping water in a closed container
Answer: c – More exposed area → faster evaporation.
12. Water evaporates slower when:
a) Wind blows
b) It is a sunny day
c) It is a rainy day
d) It is spread on a plate
Answer: c – Rainy days have high humidity, so evaporation slows.
13. Clothes dry faster:
a) On a rainy day
b) In a closed room
c) On a windy day
d) Under the bed
Answer: c – Wind increases evaporation.
14. What causes cooling during evaporation?
a) Water releases heat
b) Water gains heat from surroundings
c) Water becomes cold automatically
d) Air makes it cold
Answer: b – Evaporation absorbs heat from surroundings.
15. Water kept in an earthen pot becomes cold due to:
a) Freezing inside the pot
b) Water boiling inside
c) Evaporation through pores
d) Condensation
Answer: c – Slow evaporation through pores cools the water.
Section C – Condensation
16. The process by which water vapour changes into water is:
a) Evaporation
b) Melting
c) Condensation
d) Freezing
Answer: c – Condensation forms liquid water from vapour.
17. Water droplets on the outer surface of a cold glass are due to:
a) Water leaking from inside
b) Freezing
c) Condensation of water vapour
d) Melting of glass
Answer: c – Air vapour condenses on the cold surface.
18. Dew drops are seen more in the morning because:
a) Sun causes melting
b) Air is warmer
c) Air is cooler and water vapour condenses
d) Plants produce water
Answer: c – Morning air is cool → condensation.
19. Clouds are formed due to:
a) Burning
b) Condensation of water vapour around dust particles
c) Freezing of air
d) Melting of snow
Answer: b – Vapour condenses on dust to form clouds.
20. In Activity 8.4, water mass increases because:
a) Water leaks out
b) Water gets absorbed
c) Condensed droplets add mass
d) Ice melts
Answer: c – Extra water comes from condensed vapour.
Section D – Activity-Based MCQs
21. In Activity 8.1, an ice cube left on the table:
a) Evaporates directly
b) Changes into water
c) Becomes vapour only
d) Stays as ice
Answer: b – Ice melts into liquid water.
22. In Activity 8.2, water on a steel plate disappears because of:
a) Absorption
b) Evaporation
c) Condensation
d) Melting
Answer: b – Water evaporates from the steel plate.
23. In Activity 8.3, water droplets appear:
a) Inside the tumbler
b) On the outer surface
c) At the bottom only
d) On the table
Answer: b – Droplets appear outside due to condensation.
24. Activity 8.7 shows that evaporation becomes faster when:
a) Area exposed is less
b) Area exposed is more
c) Water is in a bottle
d) Water is frozen
Answer: b – More surface area increases evaporation.
25. In Activity 8.8, water evaporates faster:
a) In shade
b) In sunlight
c) Inside a refrigerator
d) At night
Answer: b – Sunlight provides more heat → faster evaporation.
Section E – States of Matter Properties
26. Ice has:
a) Fixed shape
b) No fixed shape
c) Ability to flow
d) Ability to spread
Answer: a – Ice has a fixed shape.
27. Water takes the shape of:
a) Ice cube
b) Its container
c) The freezer
d) The floor only
Answer: b – Water takes the shape of any container.
28. Water vapour:
a) Has fixed shape
b) Is visible
c) Spreads in entire space
d) Is a solid
Answer: c – Gases spread out completely.
29. When water vapour spreads, it behaves like:
a) A liquid
b) A solid
c) Any gas
d) Ice
Answer: c – Vapour behaves like any gas.
30. Which state spreads the most?
a) Ice
b) Water
c) Water vapour
d) All same
Answer: c – Gas spreads the most.
Section F – Changing States of Water
31. Melting is:
a) Solid to liquid
b) Liquid to solid
c) Gas to solid
d) Gas to liquid
Answer: a – Melting converts a solid to a liquid.
32. Freezing is:
a) Ice to water
b) Vapour to water
c) Water to ice
d) Water to vapour
Answer: c – Freezing turns liquid water into ice.
33. Evaporation is:
a) Water to water vapour
b) Water vapour to water
c) Ice to snow
d) Water to ice
Answer: a – Evaporation forms vapour.
34. Condensation is:
a) Water to vapour
b) Vapour to water
c) Ice to water
d) Gas to solid
Answer: b – Vapour cools into water.
35. The diagram in Activity 8.6 shows:
a) Heating and cooling have no effect
b) Heating changes state
c) Cooling changes state
d) Both heating and cooling change state
Answer: d – Heating and cooling cause state changes.
Section G – Water Cycle
36. Water from oceans rises due to:
a) Melting
b) Freezing
c) Evaporation
d) Absorption
Answer: c – Heat from the sun evaporates ocean water.
37. Water vapour becomes clouds due to:
a) Boiling
b) Condensation
c) Melting
d) Freezing
Answer: b – Vapour condenses to form droplets.
38. Rain occurs when:
a) Clouds disappear
b) Water droplets become heavy
c) Sunlight melts clouds
d) Air becomes hot
Answer: b – Heavy droplets fall as rain.
39. The continuous movement of water is called:
a) Evaporation cycle
b) Condensation cycle
c) Water cycle
d) Air cycle
Answer: c – Continuous movement = water cycle.
40. Water vapour rises because:
a) It is heavier than air
b) It is lighter than air
c) It melts
d) It freezes
Answer: b – Water vapour is lighter, so it rises.
Section H – Humidity
41. Humidity means:
a) Temperature
b) Amount of sunlight
c) Amount of water vapour in air
d) Amount of rain
Answer: c – Humidity = water vapour present in air.
42. High humidity means:
a) Slower evaporation
b) Faster evaporation
c) More melting
d) More freezing
Answer: a – More vapour in air slows evaporation.
Section I – Application-Based MCQs
43. Clothes dry slowly on rainy days because:
a) Less water
b) High humidity
c) No sun
d) No wind
Answer: b – Air is full of moisture, so evaporation slows.
44. A fan helps in drying clothes because:
a) It cools water
b) It increases airflow, helping evaporation
c) It heats water
d) It absorbs water
Answer: b – Moving air speeds up evaporation.
45. Earthen pots keep water cool because:
a) Sand freezes inside
b) Water evaporates through pores
c) They are heavy
d) They have lids
Answer: b – Evaporation through pores cools the water.
46. Hand sanitiser feels cool because:
a) It freezes
b) It evaporates quickly, taking heat
c) It becomes ice
d) It is cold liquid
Answer: b – Rapid evaporation absorbs heat.
47. Food smell spreads because:
a) Food melts
b) Water spreads
c) Vapours spread like gases
d) Food becomes solid
Answer: c – Vapours spread through air particles.
48. Dew formation proves:
a) Water evaporates only in day
b) Condensation occurs on cool surfaces
c) Ice falls from sky
d) Air becomes solid
Answer: b – Dew forms when vapour condenses on cool grass.
49. Steam appears white because:
a) Pure vapour is visible
b) Dust in steam
c) Tiny water droplets scatter light
d) Steam freezes
Answer: c – Steam is visible due to tiny droplets, not vapour.