Class 5, Chapter 7: Experiments With Water (Question Answer)
EVS CLASS V
CHAPTER 7(EXPERIMENTS WITH WATER)
Q.1. Name some objects that float on water?
Ans. Bowl, wood, paper, plastic, paper etc.
Q.2. Name some objects that sink in water?
Ans. Chalk, pen, coin, iron rod, needle, stone.
Q. 3. Name any two things that dissolve in water?
Ans. Sugar, salt.
Q.4. Name some things that do not dissolve in water?
Ans. Oil, ink, stone, chalk.
Q.5. What happens when adding salt to the water in which eggs
are boiling?
Ans. After adding salt the eggs are starting floating.
Q.6. Does oil dissolve in water?
Ans. The oil does not dissolve in water. Because it is
lighter than water, so it float on it.
Q.7.Why did Gandhi ji undertake Dandi march?
Ans. Gandhi ji under took Dandi march to break the law of
salt made by British.
Q.8. Name the conditions that help the sugar to dissolve
faster in water?
Ans. 1. Stirring. 2.
Heating.
Q.9. How can salt obtained from sea water?
Ans. Sea water is much salty. When the sea water heated in
the sun the water drying and evaporate and salt remains on the ground.
Q.10. Fill in the blanks:-
1. Aysha saw that
at first puri sank to the
bottom of pan, as it puffed it started floating
on
the oil.
2. The soap cake sink in water while soap case floats.
3. When Aysha put
salt in the boiling water the eggs started
floating.
4. On stirring the
sugar quickly dissolve in
water.
5. Oil does not dissolve in water.
6. The British made a law that people
could not make salt even for
use at home.
7. Gandhi ji
undertook a march from Ahmadabad
to Dandi in Gujarat.
8. Sea water can be used to making
salt.
Q.11. Write a short note about dead sea?
Ans. All oceans and seas have salty water. The saltiest of
all is dead sea. Imagine 300 gms salt in one litter of water do you able to
taste such salty water. It would be very bitter. Interestingly if a person does
not know how to swim he would not drown in this sea. He will float in water as
if lying down on it.
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