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Chapter 7: Density and Temperature

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Question 1 of 28 0% read

1. Which state of matter has a fixed shape?

A Liquid
B Gas
C Solid
D Plasma

2. Calibration of thermometer means:

A Cleaning the thermometer
B Marking temperature scale
C Filling liquid
D Measuring pressure

3. Which apparatus is used to measure volume of liquids?

A Balance
B Thermometer
C Measuring cylinder
D Spring balance

4. Which state of matter has no fixed volume?

A Solid
B Liquid
C Gas
D Ice

5. Density of a substance depends on:

A Its shape
B Its size
C Its mass and volume
D Its color

6. Linearity of thermometer means:

A Equal divisions represent equal temperature change
B Fast response
C Wide range
D High sensitivity

7. What is the SI unit of density?

A kg
B
C kg/m³
D g/cm³

8. Which state of matter has the weakest intermolecular forces?

A Solid
B Liquid
C Gas
D Plasma

9. Which liquid is commonly used in a liquid-in-glass thermometer?

A Water
B Alcohol
C Mercury
D Oil

10. Range of thermometer means:

A Accuracy
B Maximum and minimum measurable temperature
C Speed of response
D Sensitivity

11. According to particle model, particles of matter are:

A Stationary
B Continuously moving
C Invisible
D Fixed in place

12. Which scale is commonly used in laboratories?

A Kelvin
B Celsius
C Fahrenheit
D Rankine

13. Which instrument is commonly used to measure mass?

A Thermometer
B Measuring cylinder
C Balance
D Stopwatch

14. Which quantity is needed to calculate density?

A Force
B Pressure
C Mass and volume
D Temperature and mass

15. Which instrument is used to measure temperature?

A Barometer
B Thermometer
C Hygrometer
D Manometer

16. Sensitivity of thermometer depends on:

A Length of stem
B Thickness of bulb
C Volume of bulb and capillary
D Color of liquid

17. Upper fixed point of a Celsius thermometer is:

A 0°C
B 50°C
C 100°C
D 212°C

18. Particle model of matter explains:

A Only solids
B Only liquids
C Structure and behavior of matter
D Only gases

19. Lower fixed point of a Celsius thermometer is:

A 0°C
B 100°C
C 32°C
D 273°C

20. How is the volume of an irregular solid measured?

A Using ruler
B Using measuring tape
C By water displacement method
D By thermometer

21. Why is mercury suitable for thermometers?

A It is colorful
B It sticks to glass
C It expands uniformly
D It freezes easily

22. Which is an example of plasma?

A Ice
B Steam
C Sun
D Water

23. Which state of matter has particles very close together?

A Gas
B Liquid
C Solid
D Plasma

24. What is density?

A Mass multiplied by volume
B Volume divided by mass
C Mass per unit volume
D Weight per unit volume

25. Temperature is a measure of:

A Mass
B Density
C Average kinetic energy of particles
D Volume

26. What is plasma?

A Cold gas
B Liquid with ions
C Ionized gas
D Heated solid

27. What happens to particle motion when temperature increases?

A It stops
B It decreases
C It increases
D It remains same

28. Which formula represents density?

A Density = Volume / Mass
B Density = Mass × Volume
C Density = Mass / Volume
D Density = Weight / Volume

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