Table of contents | |
Multiple Choice Questions (MCQs) | |
Fill in the Blanks | |
True or False | |
Match the Following |
Multiple Choice Questions (MCQs)
Q1: What is the process of water turning into vapor called?
(a) Condensation
(b) Evaporation
(c) Freezing
(d) Melting
Ans: (b) Evaporation
Q2: Which state of water does not have a fixed shape?
(a) Ice
(b) Water
(c) Water vapor
(d) Both b and c
Ans: (d) Both b and c
Q3: What happens to water vapor when it cools down?
(a) It disappears
(b) It condenses into liquid
(c) It becomes ice
(d) It evaporates
Ans: (b) It condenses into liquid
Q4: Which of the following factors does NOT affect the rate of evaporation?
(a) Temperature
(b) Humidity
(c) Altitude
(d) Surface area
Ans: (c) Altitude
Q5: What device collects moisture from humid air to produce drinkable water?
(a) Dehumidifier
(b) Atmospheric Water Generator
(c) Air conditioner
(d) Evaporator
Ans: (b) Atmospheric Water Generator
Fill in the Blanks
Q1: The process of changing from a solid to a liquid is called __________.
Ans: Melting
Q2: Water vapor is __________ when it cools to form water droplets.
Ans: Condensed
Q3: __________ refers to the amount of water vapor present in the air.
Ans: Humidity
Q4: Ice is the __________ state of water.
Ans: Solid
Q5: Evaporation occurs faster at __________ temperatures.
Ans: Higher
True or False
Q1: Ice and water are the same substance in different states.
Ans: True
Q2: Water vapor is visible in the air.
Ans: False
Q3: Water can change states by adding or removing heat.
Ans: True
Q4: Higher humidity results in drier air.
Ans: False
Q5: Evaporation has a cooling effect on the surroundings.
Ans: True
Match the Following
Ans:
99 videos|261 docs|49 tests
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1. What are the three states of water? |
2. How does water change from one state to another? |
3. What is the temperature at which water freezes and boils? |
4. How does the state of water affect its density? |
5. Why is understanding the states of water important? |
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