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Online Tests
Physics 9th Class English Medium Unit 7 Online Test MCQs With Answers
Question # 1
When an ideal gas is expanded keeping its temperatur econsitant, its internal energy
Choose an answer
Increases
Remains the same
Decreases
Cannot be determined
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Question # 2
What type of motion is of the molecules in a gas.
Choose an answer
Random motion
Linear motion
Vibratory motion
Rotatory motion
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Question # 3
How many phases of mater are there.
Choose an answer
2
1
3
4
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Question # 4
One disadvantage of using alcohol in a liquid in glass therometer.
Choose an answer
It wets the glass tube
It has large expansivity
It has low freezign point (-112 oC)
Its expansion is linear
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Question # 5
Which of the following can increase the sensitivity of liquid in glass thermometer.
Choose an answer
Changes colour on temperture
Use a longer capillary tube
Use a bigger bulb which contains more amount of liquids
Using long specific its
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Question # 6
The temperature which has the same value on Celcius and Fahrenheit scale is.
Choose an answer
-45
+40
-40
+45
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Question # 7
A thermometer has a narrow capillary tube so that it.
Choose an answer
Gives alarge chagne for a given temperture rise
Quickly responds to temperature changes
Can read the maximum temperature
Can measure a large range of temperature.
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Question # 8
Heat is the
Choose an answer
The energy in transit
Total kinetic energy of the molecules
The internal energy
Work done by the olecules
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Question # 9
In Kelvin scale, the temperature corresponding to melting point of ice is
Choose an answer
+273
-273
32
Zero
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Question # 10
In which of the materials, particles have only vibrational motion.
Choose an answer
Liquids
Solid
Plasma
Gas
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Question # 11
How dow the molecules in a solid behave.
Choose an answer
Move randomly
Move in a stragiht line rom hot to cold ends
Vibrate about their mean position
Rotate and vibrae randomly at their own positions
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Question # 12
Which state of matter has particles that are highly compressible and can fill any container.
Choose an answer
Plasma
Solid
Gas
Liquid
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