Are you looking for Class 6 Science Chapter 8 – A Journey Through States of Water MCQ Questions with Answers? You are in the right place! These multiple choice questions are based on the CBSE Curiosity Book and help students practice important concepts and prepare effectively for exams.
Table of Contents
These MCQs are designed to enhance your understanding and boost your confidence. You can also use them for class tests, school assessments, or self-practice. Let’s begin the quiz!
Class 6 Science Chapter 8: A Journey Through States of Water MCQ Questions with Answers
Question 1.At what temperature does pure water freeze at normal atmospheric pressure?
(a) 0 °C
(b) 10 °C
(c) 100 °C
(d) –10 °C
Show Answer
Answer: (a) 0 °C
Explanation: Pure water changes from liquid to solid at 0 °C under normal conditions.
Question 2.
Which process changes water vapour directly into liquid form?
(a) Evaporation
(b) Melting
(c) Condensation
(d) Freezing
Show Answer
Answer: (c) Condensation
Explanation: Condensation is the process by which water vapour cools down and becomes liquid.
Question 3.
Which of the following helps in faster evaporation of water?
(a) Higher temperature
(b) More surface area
(c) Stronger wind
(d) All of these
Show Answer
Answer: (d) All of these
Explanation: Heat, surface area, and wind speed all increase the rate of evaporation.
Question 4.
Why do we feel cool after sweating?
(a) Sweat condenses
(b) Sweat evaporates
(c) Sweat freezes
(d) Sweat melts
Show Answer
Answer: (b) Sweat evaporates
Explanation: Evaporation of sweat absorbs heat from our body, causing cooling effect.
Question 5.
What is the boiling point of water at sea level?
(a) 50 °C
(b) 80 °C
(c) 100 °C
(d) 120 °C
Show Answer
Answer: (c) 100 °C
Explanation: At sea level, pure water boils at 100 °C.
Question 6.
Clouds are formed due to which process?
(a) Freezing
(b) Condensation
(c) Melting
(d) Evaporation
Show Answer
Answer: (b) Condensation
Explanation: Water vapour rises, cools, and condenses to form tiny droplets which appear as clouds.
Question 7.
Which form of water is present in the air around us?
(a) Ice
(b) Liquid water
(c) Water vapour
(d) Snow
Show Answer
Answer: (c) Water vapour
Explanation: The air contains water in gaseous form known as water vapour.
Question 8.
Which of the following is NOT a process in the water cycle?
(a) Evaporation
(b) Condensation
(c) Photosynthesis
(d) Precipitation
Show Answer
Answer: (c) Photosynthesis
Explanation: Water cycle mainly includes evaporation, condensation, and precipitation.
Question 9.
What causes dew drops to form on leaves in the early morning?
(a) Evaporation
(b) Freezing
(c) Condensation
(d) Sublimation
Show Answer
Answer: (c) Condensation
Explanation: Water vapour condenses into liquid drops when it touches cool leaf surfaces.
Question 10.
Why does evaporation cause cooling?
(a) Molecules release heat
(b) Molecules absorb heat
(c) Molecules freeze
(d) Molecules condense
Show Answer
Answer: (b) Molecules absorb heat
Explanation: During evaporation, water molecules absorb latent heat from surroundings, producing cooling.
Question 11.
Which of the following changes is a physical change in water?
(a) Burning hydrogen to form water
(b) Freezing of water
(c) Electrolysis of water
(d) Rusting of iron in water
Show Answer
Answer: (b) Freezing of water
Explanation: Freezing only changes state from liquid to solid; the chemical composition remains the same.
Question 12.
Which process helps in formation of salt from seawater?
(a) Freezing
(b) Evaporation
(c) Condensation
(d) Boiling
Show Answer
Answer: (b) Evaporation
Explanation: Salt is obtained by evaporating seawater, leaving salt crystals behind.
Question 13.
Which of the following is an example of sublimation?
(a) Melting of ice
(b) Boiling of water
(c) Dry ice changing to gas
(d) Condensation of steam
Show Answer
Answer: (c) Dry ice changing to gas
Explanation: Sublimation is the direct change from solid to gas without liquid phase.
Question 14.
Which state of water has a fixed volume but no fixed shape?
(a) Ice
(b) Liquid water
(c) Water vapour
(d) All of these
Show Answer
Answer: (b) Liquid water
Explanation: Liquids have definite volume but take the shape of their container.
Question 15.
Why does wet clothes dry faster on a windy day?
(a) Wind increases condensation
(b) Wind reduces temperature
(c) Wind increases evaporation
(d) Wind freezes water
Show Answer
Answer: (c) Wind increases evaporation
Explanation: Moving air carries away vapour quickly, increasing the rate of evaporation.
Question 16.
What is the main source of water vapour in the atmosphere?
(a) Rivers
(b) Oceans
(c) Lakes
(d) Glaciers
Show Answer
Answer: (b) Oceans
Explanation: Oceans cover most of Earth’s surface and provide the maximum water vapour by evaporation.
Question 17.
Which of the following processes is responsible for formation of rain?
(a) Evaporation
(b) Condensation
(c) Precipitation
(d) Both (b) and (c)
Show Answer
Answer: (d) Both (b) and (c)
Explanation: Water vapour condenses into clouds and then falls as precipitation (rain).
Question 18.
Which process is used in distillation of water?
(a) Evaporation and condensation
(b) Boiling and freezing
(c) Melting and sublimation
(d) Freezing and condensation
Show Answer
Answer: (a) Evaporation and condensation
Explanation: In distillation, water is boiled to form vapour and then condensed to pure water.
Question 19.
Snow on mountains melts slowly because:
(a) Temperature is high
(b) Temperature is low
(c) Air pressure is high
(d) Wind is fast
Show Answer
Answer: (b) Temperature is low
Explanation: At high altitudes, low temperatures prevent rapid melting of snow.
Question 20.
Which of the following best explains the water cycle?
(a) Movement of water through rivers only
(b) Circulation of water between earth and atmosphere
(c) Storage of water in oceans
(d) Use of water by plants
Show Answer
Answer: (b) Circulation of water between earth and atmosphere
Explanation: The water cycle involves evaporation, condensation, precipitation and repeat circulation.
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Conclusion
We hope these Class 6 Science MCQ Questions with Answers for Chapter 8 – A Journey Through States of Water helped you in your preparation. Practice more to master the concepts and score higher in your exams.
For more chapter-wise MCQs, worksheets, and study materials, explore our Class 6 Science MCQ Questions section.
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Frequently Asked Questions (FAQs) on A Journey Through States of Water Class 6 MCQ Questions
A1: The best way to practice Class 6 Science MCQ questions is to go through each chapter’s concepts from your textbook and then attempt MCQs chapter-wise. This helps reinforce learning and improve concept clarity.
A2: Yes, all the multiple choice questions provided here are strictly based on the CBSE Class 6 Science Curiosity Book syllabus to ensure complete exam relevance.
A3: Absolutely! These MCQs are perfect for school assessments, classroom practice, and quick revision before exams.
A4: Yes, answers are provided for every MCQ to help students cross-check and learn from their mistakes.
A5: MCQ questions improve analytical thinking, speed, and concept retention. Regular practice helps students become confident and perform better in exams.
A6: You can explore more chapter-wise Class 6 Science MCQ Questions with answers on our website’s dedicated section: Class 6 Science MCQ Questions.
