These Water in the Atmosphere Important Questions cover the most important MCQs, one-word questions, assertion and reason questions and descriptive questions from NCERT Class 11 Geography Chapter 10. The questions are prepared from NCERT concepts and important exam-oriented topics for quick revision and practice.
This page is useful for UPSC, SSC, PSC, Railway, CUET and Class 11 Geography preparation, helping students revise important concepts related to humidity, evaporation, condensation, clouds, precipitation and atmospheric moisture.
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These MCQs from Water in the Atmosphere are designed for quick objective revision and competitive exam preparation. The questions cover important atmospheric moisture concepts, humidity, cloud formation and precipitation processes discussed in the NCERT chapter.
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MCQ 1. The main source of atmospheric moisture is:
A. Mountains
B. Oceans
C. Forests only
D. Volcanoes only
MCQ 2. The process through which water changes into vapour is called:
A. Condensation
B. Precipitation
C. Evaporation
D. Sublimation
MCQ 3. Evaporation increases with:
A. Lower temperature
B. Higher humidity
C. Higher temperature
D. Calm air only
MCQ 4. The amount of water vapour present in air is called:
A. Pressure
B. Humidity
C. Condensation
D. Insolation
MCQ 5. Humidity expressed as percentage is called:
A. Absolute humidity
B. Specific humidity
C. Relative humidity
D. Saturation point
MCQ 6. Air becomes saturated when:
A. It contains no moisture
B. It contains maximum moisture possible at given temperature
C. Temperature reaches 0°C
D. Wind stops completely
MCQ 7. The temperature at which air becomes saturated is called:
A. Freezing point
B. Dew point
C. Boiling point
D. Lapse rate
MCQ 8. Condensation occurs when:
A. Air temperature rises
B. Air cools below dew point
C. Pressure decreases only
D. Winds stop completely
MCQ 9. Tiny drops of water suspended in air near ground form:
A. Clouds
B. Fog
C. Frost
D. Hailstones
MCQ 10. Clouds are formed mainly due to:
A. Condensation of water vapour
B. Earthquakes
C. Solar eclipses
D. Ocean currents only
MCQ 11. Which clouds appear as high thin white sheets?
A. Cumulus
B. Nimbus
C. Cirrus
D. Stratus
MCQ 12. Dark rain-bearing clouds are generally called:
A. Cirrus
B. Nimbus
C. Stratus
D. Cumulus
MCQ 13. Heap-like clouds with flat bases are called:
A. Cirrus
B. Stratus
C. Nimbus
D. Cumulus
MCQ 14. Continuous layered clouds are called:
A. Stratus
B. Cumulus
C. Nimbus
D. Cirrus
MCQ 15. Rainfall caused by surface heating is called:
A. Cyclonic rainfall
B. Orographic rainfall
C. Convectional rainfall
D. Frontal rainfall
MCQ 16. Rainfall occurring due to mountains obstructing winds is called:
A. Cyclonic rainfall
B. Frontal rainfall
C. Orographic rainfall
D. Convectional rainfall
MCQ 17. The leeward side of mountains generally experiences:
A. Heavy rainfall
B. Rain shadow region
C. Cyclones only
D. Snowstorms only
MCQ 18. Rainfall caused by meeting of warm and cold air masses is called:
A. Orographic rainfall
B. Convectional rainfall
C. Cyclonic rainfall
D. Relief rainfall
MCQ 19. Snowfall occurs when:
A. Temperature remains above freezing point
B. Water vapour freezes directly
C. Humidity disappears completely
D. Pressure becomes very high
MCQ 20. Hailstones are formed mainly in:
A. Calm weather
B. Thunderstorms
C. Desert regions only
D. Polar regions only
MCQ 21. The process by which ice changes directly into vapour is called:
A. Condensation
B. Sublimation
C. Evaporation
D. Freezing
MCQ 22. Absolute humidity refers to:
A. Percentage of moisture
B. Weight of water vapour per unit volume of air
C. Cooling of air only
D. Rainfall intensity only
MCQ 23. Relative humidity decreases when:
A. Temperature increases without adding moisture
B. Air cools to dew point
C. Condensation occurs
D. Moisture content increases only
MCQ 24. Clouds generally form in:
A. Troposphere
B. Exosphere
C. Mesosphere
D. Thermosphere
MCQ 25. The side of mountain receiving maximum rainfall is called:
A. Leeward side
B. Rain shadow side
C. Windward side
D. Plateau side
MCQ 26. Fog is essentially:
A. High cloud
B. Ground-level cloud
C. Frozen rain
D. Snowfall only
MCQ 27. Warm air can hold:
A. Less moisture
B. More moisture
C. No moisture
D. Fixed amount of moisture only
MCQ 28. Condensation releases:
A. Latent heat
B. Solar energy only
C. Pressure energy only
D. Wind energy only
MCQ 29. Rainfall is measured using:
A. Hygrometer
B. Barometer
C. Rain gauge
D. Thermometer
MCQ 30. Which form of precipitation consists of ice pellets?
A. Dew
B. Fog
C. Hail
D. Drizzle
One-Word / Very Short Answer Questions
These one-word and factual questions help students quickly revise important atmospheric moisture concepts, cloud types and precipitation processes from the chapter. The section is especially useful for UPSC, SSC, PSC, Railway, CUET and other objective examinations.
1. What is atmospheric moisture called?
Answer: Humidity | Page Reference: Page 85
2. Which process converts water into vapour?
Answer: Evaporation | Page Reference: Page 84
3. Which process converts vapour into liquid water?
Answer: Condensation | Page Reference: Page 86
4. What is temperature of saturation called?
Answer: Dew point | Page Reference: Page 85
5. What are ground-level clouds called?
Answer: Fog | Page Reference: Page 86
6. Which clouds are thin and feathery?
Answer: Cirrus clouds | Page Reference: Page 87
7. Which clouds are rain-bearing?
Answer: Nimbus clouds | Page Reference: Page 87
8. Which clouds are heap-like?
Answer: Cumulus clouds | Page Reference: Page 87
9. Which clouds occur in layers?
Answer: Stratus clouds | Page Reference: Page 87
10. Which rainfall occurs due to convection currents?
Answer: Convectional rainfall | Page Reference: Page 88
11. Which rainfall occurs due to mountains?
Answer: Orographic rainfall | Page Reference: Page 88
12. Which side of mountain receives less rainfall?
Answer: Leeward side | Page Reference: Page 88
13. Which rainfall occurs due to fronts?
Answer: Cyclonic rainfall | Page Reference: Page 89
14. Which instrument measures rainfall?
Answer: Rain gauge | Page Reference: Page 89
15. Which precipitation form consists of ice pellets?
Answer: Hail | Page Reference: Page 89
16. Which process changes ice directly into vapour?
Answer: Sublimation | Page Reference: Page 84
17. Which humidity is expressed in percentage?
Answer: Relative humidity | Page Reference: Page 85
18. Which atmospheric layer contains clouds?
Answer: Troposphere | Page Reference: Page 87
19. Which side of mountain receives maximum rainfall?
Answer: Windward side | Page Reference: Page 88
20. What is released during condensation?
Answer: Latent heat | Page Reference: Page 86
Assertion and Reason Questions
These assertion and reason questions from Water in the Atmosphere help students develop conceptual clarity and analytical understanding of atmospheric moisture, cloud formation and precipitation processes. They are highly useful for board exams and competitive examinations.
Question 1
Assertion (A): Evaporation increases with rise in temperature.
Reason (R): Higher temperature provides more energy to water molecules.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 2
Assertion (A): Warm air can hold more moisture than cold air.
Reason (R): Capacity of air to retain water vapour increases with temperature.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 3
Assertion (A): Condensation occurs after air cools below dew point.
Reason (R): Saturated air cannot hold excess water vapour.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 4
Assertion (A): Fog is a ground-level cloud.
Reason (R): Water vapour condenses near Earth’s surface under suitable conditions.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 5
Assertion (A): Cirrus clouds generally indicate fair weather.
Reason (R): Cirrus clouds are high thin clouds made of ice crystals.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 6
Assertion (A): Orographic rainfall occurs on windward mountain slopes.
Reason (R): Moist air rises, cools and condenses when obstructed by mountains.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 7
Assertion (A): Leeward side of mountains receives less rainfall.
Reason (R): Descending air becomes warmer and drier on leeward side.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 8
Assertion (A): Convectional rainfall is common in equatorial regions.
Reason (R): Strong heating causes rapid upward movement of moist air.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 9
Assertion (A): Cyclonic rainfall occurs due to meeting of warm and cold air masses.
Reason (R): Warm air rises above cold air causing condensation.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 10
Assertion (A): Relative humidity changes with temperature.
Reason (R): Warm air has greater moisture-holding capacity.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 11
Assertion (A): Condensation releases latent heat.
Reason (R): Water vapour loses energy during conversion into liquid form.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 12
Assertion (A): Nimbus clouds are associated with rainfall.
Reason (R): Nimbus clouds are dense moisture-laden clouds.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 13
Assertion (A): Relative humidity decreases when temperature rises without adding moisture.
Reason (R): Warm air can hold more moisture.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 14
Assertion (A): Hailstones are common during thunderstorms.
Reason (R): Strong upward air currents repeatedly carry ice particles upward.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 15
Assertion (A): Clouds form mainly in troposphere.
Reason (R): Most atmospheric moisture exists in troposphere.
Options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Important Exam-Based Concept Questions
These important descriptive and analytical questions from Water in the Atmosphere are useful for board examinations and competitive exams. The questions focus on conceptual understanding, atmospheric moisture and precipitation processes.
1. Explain the importance of atmospheric moisture.
Page Reference: Page 84
2. Discuss the process and factors affecting evaporation.
Page Reference: Page 84
3. Explain the concept and types of humidity.
Page Reference: Page 85
4. Differentiate between absolute humidity and relative humidity.
Page Reference: Page 85
5. Explain the meaning and significance of dew point.
Page Reference: Page 85
6. Discuss the conditions necessary for condensation.
Page Reference: Page 86
7. Explain the formation of fog and mist.
Page Reference: Page 86
8. Describe the different types of clouds.
Page Reference: Page 87
9. Differentiate between cirrus, cumulus, stratus and nimbus clouds.
Page Reference: Page 87
10. Explain the process of cloud formation.
Page Reference: Page 87
11. Discuss the different forms of precipitation.
Page Reference: Page 89
12. Explain the mechanism of convectional rainfall.
Page Reference: Page 88
13. Describe the process of orographic rainfall with suitable diagram explanation.
Page Reference: Page 88
14. Explain why rain shadow regions develop on leeward slopes.
Page Reference: Page 88
15. Discuss the mechanism of cyclonic rainfall.
Page Reference: Page 89
16. Differentiate between convectional, orographic and cyclonic rainfall.
Page Reference: Page 88–89
17. Explain the formation of hailstones during thunderstorms.
Page Reference: Page 89
18. Discuss the relationship between humidity and temperature.
Page Reference: Page 85
19. Explain the role of atmospheric moisture in weather and climate.
Page Reference: Page 84–89
20. Discuss the importance of condensation in the hydrological cycle.
Page Reference: Page 86–89
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