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question_answer1)
Burning of fire needs:
A)
oxygen done
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B)
carbon dioxide done
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C)
nitrogen done
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D)
water vapour done
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question_answer2)
Which of the following is not a property of air?
A)
Air occupies space done
clear
B)
Air exerts pressure done
clear
C)
Air has no mass done
clear
D)
Air cannot be seen done
clear
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question_answer3)
Which of the following activity requires air?
A)
B)
C)
D)
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question_answer4)
When Suresh blew air into a balloon it expanded. This shows that:
A)
air has no mass done
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B)
air occupies volume and space done
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C)
air has no weight done
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D)
air is invisible done
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question_answer5)
Answer questions 5 based on the information given below.
A student took two dishes and poured equal amount of water in them. He placed the Dish A in the sunlight and the Dish B is a closed room. In which dish will the water evaporate fastest?
A)
Dish A done
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B)
Dish B done
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C)
Same in both the dishes done
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D)
Cannot be determined done
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question_answer6)
Answer questions 6 based on the information given below.
If he were to observe the dishes after three hours, in which dish will the student find more water?
A)
Dish A done
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B)
Dish B done
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C)
Both will have same amount of water done
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D)
We cannot say from the given information done
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question_answer7)
Answer questions 7 based on the information given below.
From the above experiment we can conclude that:
A)
Evaporation is faster in closed rooms done
clear
B)
Evaporation is slow in the dishes named B done
clear
C)
Evaporation is slow in sunlight done
clear
D)
Evaporation is faster in the open done
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question_answer8)
Anuraag took a glass of cold water from the refrigerator and placed it on a table. After few minutes he observed water drops on the outer surface of the glass. What has happened?
A)
Glass produced water droplets done
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B)
The water in the glass moved through the glass done
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C)
Water vapour present in the air is condensed done
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D)
Water came out from the gaps present in the glass done
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question_answer9)
The following table contains some substances placed under the headings: solids, liquids and gases. Which of the following is placed under wrong group?
Solids |
Liquids |
Gases |
Sugar |
Water |
Steam |
Salt |
Petrol |
Oxygen |
Iron |
Milk |
Kerosene |
A)
Salt done
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B)
Petrol done
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C)
Oxygen done
clear
D)
Kerosene done
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question_answer10)
The list below contains different states of matter and some of their properties. Match them.
1. Solids |
A. They have no fixed shape and no fixed volume |
2. Liquids |
B. They have fixed shape and fixed volume |
3. Gases |
C. They have fixed volume but not fixed shape |
A)
1-A, 2-C, 3-B done
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B)
1-C, 2-A, 3-B done
clear
C)
1-B, 2-C, 3-A done
clear
D)
1-B, 2-A, 3-C done
clear
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question_answer11)
A student took an unknown matter into a beaker. The matter took the shape of the beaker. Later he transferred the matter into a measuring cylinder. The matter took the shape of the cylinder but its volume remained the same. What is the state of that matter?
A)
Solid done
clear
B)
Gas done
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C)
Liquid done
clear
D)
None done
clear
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question_answer12)
Observe the following figure and answer the questions 12.
The state of water in the first beaker is:
A)
liquid done
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B)
solid done
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C)
gas done
clear
D)
none done
clear
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question_answer13)
Observe the following figure and answer the questions 13.
The ice present in the first beaker becomes water upon:
A)
cooling done
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B)
heating done
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C)
evaporation done
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D)
condensation done
clear
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question_answer14)
Observe the following figure and answer the questions 14.
To obtain water from water vapour, we should _______ the water vapour.
A)
heat done
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B)
evaporate done
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C)
condense done
clear
D)
do nothing done
clear
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question_answer15)
Observe the following figure and answer the questions 15.
Which of the following is wrong?
A)
Solid \[\xrightarrow[{}]{heat}\]Liquid done
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B)
Solid\[\xrightarrow[{}]{cool}\]Gas done
clear
C)
Liquid\[\xrightarrow[{}]{cool}\]Solid done
clear
D)
Liquid\[\xrightarrow[{}]{heat}\]Gas done
clear
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question_answer16)
Madhuri kept some water in a refrigerator and after some time the water changed into ice. What is this process called?
A)
Condensation done
clear
B)
Evaporation done
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C)
Boiling done
clear
D)
Freezing done
clear
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question_answer17)
Vishal took some water and poured it into a beaker. The water took the shape of the beaker. Then he poured into a mug and water took the shape of the mug. With this observation we can conclude that water is a:
A)
solid done
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B)
liquid done
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C)
gas done
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D)
both A & C done
clear
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question_answer18)
To obtain water from water vapour, we should ______ the water vapour.
A)
heat done
clear
B)
evaporate done
clear
C)
condense done
clear
D)
do nothing done
clear
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question_answer19)
Water has:
A)
fixed shape done
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B)
no fixed shape done
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C)
no weight done
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D)
strong smell done
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question_answer20)
As we go higher from the earth:
A)
the amount of air increases done
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B)
the amount of air decreases done
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C)
the amount of air does not change done
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D)
all the above done
clear
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question_answer21)
Our earth is surrounded by a layer of air called:
A)
weather done
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B)
temperature done
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C)
atmosphere done
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D)
rainfall done
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question_answer22)
About 70% of our body contains:
A)
water done
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B)
air done
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C)
heart done
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D)
lungs done
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question_answer23)
When we pour ice cubes into a jug of water ice floats on water. Why?
A)
Ice is heavier than water done
clear
B)
Ice is solid while water is liquid done
clear
C)
Ice has white colour done
clear
D)
Ice is lighter than water done
clear
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question_answer24)
Which form of water can we feel, see and crush?
A)
solid done
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B)
liquid done
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C)
gaseous done
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D)
None done
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question_answer25)
Ice is _______ form of water.
A)
solid done
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B)
liquid done
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C)
gaseous done
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D)
none of these done
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question_answer26)
When we boil water in a kettle, steam comes out of the kettle. Steam is _____ form of water.
A)
solid done
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B)
liquid done
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C)
gaseous done
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D)
none of these done
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question_answer27)
Evaporation is:
A)
changing ice into water by heating done
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B)
changing ice into water vapour by heating done
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C)
changing water into ice by cooling done
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D)
changing water into water vapour by heating done
clear
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question_answer28)
Condensation is:
A)
changing water into ice by cooling done
clear
B)
changing water vapour into water by cooling done
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C)
changing ice into water by heating done
clear
D)
changing water into ice by heating done
clear
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question_answer29)
If we leave ice cubes on a table in our house, after sometime it becomes water. What is the process in this change?
A)
Freezing done
clear
B)
Boiling done
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C)
Melting done
clear
D)
Evaporation done
clear
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question_answer30)
The clouds are formed by:
A)
condensation done
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B)
evaporation done
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C)
melting done
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D)
boiling done
clear
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question_answer31)
Which of the following statements is wrong?
A)
Snow and ice are both the same forms of water done
clear
B)
On heating, water changes into steam done
clear
C)
Evaporation and condensation are reverse of each other done
clear
D)
On heating water changes into ice done
clear
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question_answer32)
If we heat water in a pot on a stove, water changes into water vapour. Now, if we hold a steel plate against the steam, we can see small drops of water on the plate. This formation of small drops of water on the plate is due to:
A)
condensation done
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B)
evaporation done
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C)
melting done
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D)
freezing done
clear
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question_answer33)
A student measured rainfall during a week using a rain gauge. The following table shows the measurements. Answer the questions 33 - 35
Day |
Rainfall |
Sunday |
1.5 cm |
Monday |
2 cm |
Tuesday |
Nil |
Wednesday |
Nil |
Thursday |
3 cm |
Friday |
8 cm |
Saturday |
5 cm |
On which day did it rain the most?
A)
Sunday done
clear
B)
Tuesday done
clear
C)
Wednesday done
clear
D)
Friday done
clear
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question_answer34)
On which days can we play in the Sun?
A)
Sunday and Monday done
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B)
Sunday and Saturday done
clear
C)
Wednesday and Sunday done
clear
D)
Tuesday and Wednesday done
clear
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question_answer35)
What is the total rainfall during the week?
A)
8 cm done
clear
B)
Nil done
clear
C)
19.5 cm done
clear
D)
16 cm done
clear
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question_answer36)
A glass with ice cubes is shown here. The formation of water drops on the outer surface of the glass is due to:
A)
evaporation done
clear
B)
transpiration done
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C)
condensation done
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D)
sublimation done
clear
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question_answer37)
Observe the figures given below.
Which of these represent X and Y?
A)
X-evaporation, Y-condensation done
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B)
X-heating, Y-cooling done
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C)
X-cooling, Y-evaporation done
clear
D)
X-heating, Y-condensation done
clear
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question_answer38)
What will happen if we leave a small piece of ice cube in the sun?
A)
It will become black done
clear
B)
It will change into water done
clear
C)
Both A and B done
clear
D)
It will become bigger in size done
clear
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question_answer39)
What does the figure given below represent?
A)
River cycle done
clear
B)
Path of germs in air done
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C)
Formation of clouds done
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D)
Water cycle done
clear
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question_answer40)
What do 1, 2, 3 and 4 in the processes shown below represent? \[Water\xrightarrow{1}Steam\xrightarrow{2}Water\] \[Ice\xrightarrow{3}Water\xrightarrow{4}Steam\]
A)
1-heat, 2-cool, 3-cool, 4-heat done
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B)
1-heat, 2-cool, 3-heat, 4-heat done
clear
C)
1-cool, 2-heat, 3-heat, 4-heat done
clear
D)
1-cool, 2-cool, 3-heat, 4-cool done
clear
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question_answer41)
Four containers with water are shown below. In which of them will the rate of evaporation be fastest?
A)
P done
clear
B)
Q done
clear
C)
R done
clear
D)
S done
clear
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question_answer42)
Which of the following is NOT a form of water?
A)
Steam done
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B)
Coal done
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C)
Dew done
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D)
Snow done
clear
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question_answer43)
A puddle of water on a marble floor is left untouched for some hours. How will it change?
A)
It becomes smaller done
clear
B)
It becomes larger done
clear
C)
It changes into ice done
clear
D)
It changes into marble done
clear
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question_answer44)
Which of the following is the correct method of reusing used water?
A)
Using water that was used to clean vegetables for drinking done
clear
B)
Using stale water for washing clothes done
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C)
Using water from factories for cooking done
clear
D)
Using the water after bathing to water plants done
clear
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question_answer45)
In how many states can water exist in?
A)
1 done
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B)
2 done
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C)
3 done
clear
D)
4 done
clear
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