Multiple Choice Questions | Chapter 7 | Density & Temperature | 9th Physics | National Book | FBISE

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How many phases of matter are there?
(a) 1 (b) 2 (c) 3 (d) 4
In which of the materials, particles have only vibrational motion?
(a) solid (b) liquids (c) gas (d) plasma
Which amount of water has greater density at room temperature?
(a) 100g (b) 1kg (c) 1ton (d)All have same density
What is mass of a liquid of density 50kgm^(-3) in a container of volume 5m^3?
(a) 200kg (b) 225kg (c) 250kg (d) 275kg
Gases and liquids are categorized as:
(a) liquids (b) gases (c) fluids (d) solids
Which statement describes the particle structure of gases?
(a) particles are tightly packed and have 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
Which state of matter has particles that are highly compressible and can fill any container?
(a) solid (b) liquid (c) gas (d) plasma
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
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
When an ideal gas is expanded keeping its temperature constant, its internal energy
(a) increases (b) decreases (c) remains the same (d) cannot be detrmined
Which of the following physical properties is used in a mercury thermometer?
(a) electrical resistance (b) pressure (c) volume (d) colour
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 long capillary tube (c) using long specific its (d) Changes colour on temperature
Thermometer, which is most suitable for measuring rapid changing temperature, is
(a) constant volume gas temperature (b) resistance thermometer
(c) liquid in glass thermometer (d) thermocouple
Mercury has uniform linear expansion in liquid in glass thermometers. A liquid in glass thermometer has a mercury level of 2cm at melting point of ice and a mercury level of 6cm at boiling point of water. What is the distance between every 1℃ division on Celsius scale of thermometer?
(a) 0.04cm (b) 0.06cm (c) 0.08cm (d) 1.00cm
Which thermometer uses voltage to measure temperature of a hot body?
(a) thermocouple (b) resistance thermometer
(c) liquid in glass thermometer (d) gas thermometer
Two liquids A and B, have densities 1g/mL and 1.2g/mL respectively. When both liquids are poured into a container, one liquid floats on top of the other. Which liquid is on top, and why?
Write a method to find the volume and density of a human body?
How is plasma the fourth state of matter? Give a reason.
Why water is not used in liquid in glass thermometers?
Can we increase internal energy of a substance without increasing its temperature?
Why are fixed point scales required for thermometers? What difficulties are there when setting fixed points for thermometer scales?
Mercury is replaced with alcohol in liquid in glass thermometers. Discuss the possible change in sensitivity and range of thermometer?
Why -273.15℃ temperature is called absolute zero? Can we achieve this temperature?
Why thermocouple thermometer is suitable to measure high temperatures but not liquid in glass thermometer? Why is a thermocouple thermometer good for measuring high temperatures but a liquid in glass thermometer is not?
Can we increase the sensitivity of a liquid in glass thermometer without changing its range?
One student claims to have constructed a more sensitive liquid in glass thermometer. How can her claim be verified?
Sarah has two objects, a wooden block and a metal ball, with the following properties:
(a) The wooden block has a mass of 300g and a volume of 150〖cm〗^3.
(b) The metal ball has a mass of 500g and a volume of 50〖cm〗^3.
Calculate the density of each object and determine which one is denser.
You have a container with 500 milliliters of cooking oil, and it has a mass of 450 grams. Calculate the density of the cooking oil in grams per milliliter (g/mL).
A 70cm 10cm 30cm plastic box has mass of 2500g. Find the density of plastic.
Aluminum has a density of 2700kgm^(-3). Find the mass of a solid 25cm diameter aluminum ball.
A cube of iron has a side length of 10cm. What is volume of this cube? Mass of this iron cube is half kilogram. This cube has cavity inside it, find the volume of the cavity?
Mass of irregular shaped stone is 200grams (g). When it is lowered in a measuring cylinder, it rises the water level from 40mL to 73mL. Find volume and density of this stone.