Last updated on September 2nd, 2024 at 10:52 pm
MCQ on Class 6 Science A Journey through States of Water
Explore fun MCQs on Class 6 Science A Journey through States of Water , Test your knowledge about the different states of water with easy questions made for students and teachers!
What is the process of conversion of water into its vapour state called?
- Condensation
- Evaporation
- Freezing
- Melting
Answer: b) Evaporation
The process of conversion of water vapour into its liquid state is called:
- Evaporation
- Freezing
- Condensation
- Melting
Answer: c) Condensation
What effect does evaporation cause?
- Heating
- Cooling
- No temperature change
- Freezing
Answer: b) Cooling
The circulation of water between the Earth’s surface and atmosphere is known as:
- Water cycle
- Hydrologic cycle
- Evaporation cycle
- Both a and b
Answer: d) Both a and b
What is the process of conversion of a solid into liquid state called?
- Freezing
- Condensation
- Evaporation
- Melting
Answer: d) Melting
The process of conversion of liquid into solid state is called:
- Freezing
- Condensation
- Evaporation
- Melting
Answer: a) Freezing
Where does most of the Earth’s water exist?
- Rivers
- Lakes
- Oceans
- Glaciers
Answer: c) Oceans
What provides the tiny particles around which water droplets form in clouds?
- Salt
- Dust
- Ice crystals
- Bacteria
Answer: b) Dust
Why does air containing water vapour rise in the atmosphere?
- It’s pushed up by wind
- It’s attracted by the moon
- It’s lighter than surrounding air
- It’s magnetically pulled upward
Answer: c) It’s lighter than surrounding air
What is NOT a form of precipitation?
- Rain
- Snow
- Hail
- Fog
Answer: d) Fog
Which of these would likely evaporate the slowest?
- Water in a shallow dish
- Water in a deep, narrow container
- Water spread on a flat surface
- Water droplets on a leaf
Answer: b) Water in a deep, narrow container
What is the main reason clothes dry faster on a windy day?
- Wind makes water molecules move faster
- Wind increases air pressure on the clothes
- Wind helps carry away evaporated water molecules
- Wind heats up the clothes
Answer: c) Wind helps carry away evaporated water molecules
Which of these would NOT help water evaporate faster?
- Increasing temperature
- Increasing humidity
- Increasing surface area
- Increasing air movement
Answer: b) Increasing humidity
In the water cycle, what process returns water vapor to Earth’s surface?
- Evaporation
- Condensation
- Precipitation
- Infiltration
Answer: c) Precipitation
What type of energy is required for evaporation to occur?
- Kinetic energy
- Potential energy
- Heat energy
- Electrical energy
Answer: c) Heat energy
Which state of water has a fixed shape?
- Solid
- Liquid
- Gas
- None of the above
Answer: a) Solid
What happens to water molecules during evaporation?
- They slow down
- They speed up
- They become heavier
- They change color
Answer: b) They speed up
What is the main source of energy for the water cycle?
- Wind
- Gravity
- The Sun
- Earth’s core
Answer: c) The Sun
What causes dew to form on grass in the morning?
- Rain
- Condensation
- Evaporation
- Transpiration
Answer: b) Condensation
What happens to the temperature of remaining water as some of it evaporates?
- It increases
- It decreases
- It stays the same
- It fluctuates randomly
Answer: b) It decreases
Which of these would evaporate fastest?
- Alcohol
- Water
- Oil
- Honey
Answer: a) Alcohol
What is the primary reason for using an earthen pot to store water?
- It’s cheap
- It’s traditional
- It keeps water cool through evaporation
- It improves water taste
Answer: c) It keeps water cool through evaporation
In which of these locations would evaporation likely be slowest?
- Desert
- Tropical rainforest
- Mountain top
- Arctic tundra
Answer: b) Tropical rainforest
What is the main difference between evaporation and boiling?
- Evaporation only occurs at the surface, boiling throughout the liquid
- Evaporation requires more energy than boiling
- Boiling only occurs at the surface, evaporation throughout the liquid
- There is no difference
Answer: a) Evaporation only occurs at the surface, boiling throughout the liquid
What causes fog to form?
- Rapid evaporation
- Rapid condensation near the ground
- Heavy rainfall
- Strong winds
Answer: b) Rapid condensation near the ground
What happens to the humidity of air as temperature increases?
- It increases
- It decreases
- It remains constant
- It becomes zero
Answer: b) It decreases
Which of these would evaporate faster?
- Salt water
- Pure water
- Sugar water
- All would evaporate at the same rate
Answer: b) Pure water
Which of these is NOT a way to increase the rate of evaporation?
- Using a fan
- Spreading the liquid out
- Increasing temperature
- Increasing pressure
Answer: d) Increasing pressure
What is the main reason for sprinkling water on the floor during summer?
- To clean the floor
- To increase humidity
- To cool the surroundings through evaporation
- To prevent dust from rising
Answer: c) To cool the surroundings through evaporation
What happens to the kinetic energy of water molecules during condensation?
- It increases
- It decreases
- It remains the same
- It becomes zero
Answer: b) It decreases
