Maharashtra Board Class 3 EVS Solution Chapter 10 More about water
Balbharati Maharashtra Board Class 3 Environmental Studies (EVS) Solution Chapter 10: More about water. Marathi or English Medium Students of Class 3 get here More about water full Exercise Solution.
Std |
Maharashtra Class 3 |
Subject |
Environmental Studies Solution |
Chapter |
More about water |
Maharashtra Board Class 3 Environmental Studies (EVS) Chapter 10 More about water Solution
Chapter – 10
More about water
(A) Due to the cold, the coconut oil in the bottle has frozen. We have to pour it out.
Ans: To pour the frozen coconut oil, we need to give heat in the bottle so that the oil converts into liquid form.
(B) (1) during the rainy season, why crisp biscuits become soft?
Ans: During the rainy season, crisp biscuits become soft because it contains water vapour in the air and biscuits occupy water vapour.
(2) Why does water become colored when crystals of potassium permanganate are added to it?
Ans: Water becomes colored when crystals of potassium permanganate are added to it because potassium permanganate dissolves in the water.
(3) When we add Jaggery to water and stir it, why does the water taste sweet?
Ans: The water tastes sweet when we add jaggery to water because jaggery contains sweetness and it gets dissolve in water as we stir it.
(4) The mountain peaks in the Himalayas are always covered with snow and ice. What could be the reason for that?
Ans: The reason is that the temperature of Himalayas is much lower than the other places. So because of it this cold atmosphere, the water turns into snow and ice.
(C) Why does the hot tea in a thermos flask remain hot for a long time?
Ans: The thermos flask is an air tight element so the hot tea in a thermos flask remains hot for a longtime.
(D) None of experiment: to see if rangoli dissolve in water.
Description: I took half a glass of water.
I added a pinch a rangoli to it.
I stirred it with a spoon.
What did I see?
The particles of rangoli were seen in the water, as before.
What does this mean?
This means that rangoli does not get dissolve in water
(E) (1) Water is transparent true
(2) Pure water look bluish in color false.
(3) When water is heated a lot, it turns into ice false.
(4) Sugar does not dissolve in water false.
(F) (1) Pure water has no color smell or taste.
(2) Water is transparent.
(3) Water does not have a shape of its own.
(4) Ice is the solid state of water.
(G) We can see a nail that has sunk to the bottom of the water.
Ans: A nail has sunk to the bottom of the water because the weight of a nail is much heavier than the weight of water.
(2) Sugar disappears when it as added to water and the water is stirred.
Ans: When sugar is added to water, it disappears because sugar dissolves in water as it is stirred.
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