Class 9 Physics Chapter 7 MCQs Federal Board
Class 9 Physics Chapter 7 MCQs Federal Board
Tick the correct option.
1) How many phases of matter are there?
A) 1
B) 2
C) 3
D) 4
Correct option is (c)
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2) In which of the materials, particles have only vibrational motion?
A) Solid
B) Liquids
C) Gas
D) Plasma
Correct option is (a)
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3) Which amount of water has greater density at room temperature?
A) 100 g
B) 1 kg
C) 1 ton
D) All have same density
Correct option is (d)
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4) What is mass of a liquid of density 50 kg m-3 in a container of volume 5 metre cube?
A) 200 kg
B) 225 kg
C) 250 kg
D) 275 kg
Correct option is (c)
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5) Gases and liquids are categorized as:
A) Liquids
B) Gases
C) Fluids
D) Solids
Correct option is (c)
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6) Which statement describes the particle structure of gases?
A) Particles are tightly packed and have some strong bonds.
B) Particles have moderate kinetic energy and move randomly.
C) Particles are arranged in a repeating pattern.
D) Particles have fixed positions and low kinetic energy.
Correct option is (b)
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7) Which state of matter has particles that are highly compressible and can fill any container?
A) Solid
B) Liquid
C) Gas
D) Plasma
Correct option is (c)
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8) What happens to the arrangement of particles when a solid is heated and turns into a liquid?
A) Particles become more closely packed.
B) Particles move farther apart.
C) Particles start vibrating in fixed positions.
D) Particles change their state from solid to gas.
Correct option is (b)
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9) Which of the following is NOT a form of internal energy?
A) Kinetic energy of the particles
B) Potential energy of the particles
C) Chemical energy of the bonds between the particles
D) light energy
Correct option is (d)
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10) When an ideal gas is expended keeping its temperature constant, its internal energy:
A) Increases
B) Decreases
C) Remain the same
D) Cannot be determined
Correct option is (c)
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11) Which of the following physical properties is used in a mercury thermometer?
A) Electrical resistance
B) Pressure
C) Volume
D) Colour
Correct option is (c)
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12) Which of the following can increase the sensitivity of liquid in glass thermometer?
A) Use a bigger bulb which contains more amount of liquids
B) Use a longer capillary tube
C) Using long specific its
D) Change colour on thermometre.
Correct option is (b)
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13) Thermometer, which is most suitable for measuring rapid changing temperature, is:
A) Constant volume gas thermometer
B) Resistance thermometer
C) Liquid in glass thermometer
D) thermocouple
Correct option is (d)
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14) Mercury has uniform linear expansion in liquid in glass thermometer. A liquid in glass thermometer has a mercury level of 2 cm at melting point of ice and a mercury level of 6 cm at boiling point of water. What is the distance between every 1 Degree C division on Celsius scale of thermometer?
A) 0.04 cm
B) 0.06 cm
C) 0.08 cm
D) 1.00 cm
Correct option is (a)
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15) Which thermometer uses voltage to measure temperature of a hot body?
A) Thermocouple
B) Resistance thermometer
C) Liquid in glass thermometer
D) gas thermometer
Correct option is (a)
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