NCERT Class 6 Science Chapter 14 Water Extra Questions and Answers
Class 6 Science Chapter 14 Extra Inside Questions and Answers – Water. Here in this Page Class VI Students can Learn Extra Questions & Answer 14th Chapter Science fully Inside.
We Provided Here Water Science Chapter 14 Long Answer Type Question, MCQ Questions & Answer, Short Answer Type Questions (2 or 3 marks), and Very Short answer Type Question (1 marks).
Class 6 Science Chapter 14 Extra Question with Answer – Water
Science Chapter 14 Water Class 6 Inside 5 Marks, 3 marks, 2 Marks & And 1 Marks Important Questions and Answers.
MCQ Type Extra Questions
(1) The boiling point of water is 100 degree Celsius. But a sample when boliled boils at 130 degree Celsius. What does this imply?
(a) It was cold
(b) It has some impurities in it
(c) The intensity of flame is not enough
(d) It contains salt in it.
Ans:- (b) It has some impurities in it
(2) In water cycle, which process takes place before rain?
(a) Freezing
(b) Condensation
(c) Evaporation
(d) Melting
Ans:- (b) Condensation
(3) How much of the Earth’s surface is covered with water?
(a) About three – fourths
(b) Exactly three-fourths
(c) About two-thirds
(d) About one-fourth
Ans:- (c) About two-thirds
(4) The Purest from natural water is
(a) Rain water
(b) Surface water
(c) Sea water
(d) Ocean water
Ans:- (a) Rain water
(5) How can we recycle water?
(a) Reusing the water from washing clothes to cook.
(b) Discharging factory waste into and seas.
(c) Discharging sewage and water materials into oceans.
(d) Reusing the water from washing clothes to wash floor
Ans: – (d) Reusing the water from washing clothes to wash floor
Very Short Answer Type Extra Questions
(1) How is evaporation depended on temperature?
Solution:
Increase in temperature increases the rate of evaporation.
(2) Loss of water in the form water vapour by leaves in called ________.
Solution:
Transpiration
(3) Name two ways by which we use ground water.
Solution:
Hand pump, Well.
(4) An experiment was conducted in which a glass of tap water ad a glass off alcohol of equal volume each were kept in the open. After a one hour it was observed that the level of alcohol was lower than the level of water. What conclusion can you draw from this experiment?
Solution:
This experiment shows that alcohol evaporation faster than water.
(5) Sea water is not fit for drinking. Give reason.
Solution:
Sea water is not fit for drinking because it is too salty and saline for human consumption or use.
Short Answer Type Extra Questions
(1) Why is conservation of water necessary ?
Solution:
It is important to conserve water because water is very important resource. We depend on water for all our needs and if is finished, we will not be able to survive.
(2) The snowman’s eyes are made from pieces of coal. Snow melts when it is hearted. Coal burns when it is heated. What types of changes are these?
Solution:
Melting of snow – Reversible change (physical)
Burning of coal- Irreversible (chemical)
(3) Suppose you want to dry your school uniform quickly. You would spread it near a heated or angithi. Will it help? How?
Solution:
Yes, because the heat from the heater or angithi will evaporation the water from the clothes and dry them.
(4) Loss in the level ground is worrisome! Why?
Solution:
Loss in the level of ground is worrisome because we depend on ground for all our water requirements.
(5) To clean their spectacles, people often breathe out on the glasses to make them wet. Explain why the glass become wet?
Solution:
The air we breathe out contains water vapour which condenses when it comes in contact with cold glass surface.
Long Answer Type Extra Questions
Source: Diksha