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# CHAPTER-11: THERMAL PROPERTIES OF MATTER

1. The S. I. unit of heat is –

• Joule
• Calorie
• Kelvin
• J/kg
Joule

2. The S. I. unit of temperature is –

• Joule
• Fahrenheit
• Kelvin
• Calorie
Kelvin

3. Ideal gas equation –

• PV=R/T
• PV=T/R
• PV=μRT
• PT=RV
PV=μRT

4. Value of universal gas constant (R) is –

• 8.31 J mol⁻¹K⁻¹
• 8.0 J mol⁻¹K⁻¹
• 6.67 J mol⁻¹K⁻¹
• 3.45 J mol⁻¹K⁻¹
8.31 J mol⁻¹K⁻¹

5. Absolute zero temperature is –

• 0°C
• 273.15°C
• – 273.15°C
• 100°C
– 273.15°C

6. Absolute zero temperature on the Fahrenheit scale is-

• – 32°(3)
• – 460°
• -212°
• -273°
– 460°

7. The normal temperature of the human body is-

• 98.6°F or 37°C
• 212°F or 100°C
• 104°F or 40°C
• None of these
98.6°F or 37°C

8. The S. I. unit of specific heat capacity is-

• J kg⁻¹k⁻¹
• J mol⁻¹k⁻¹
• J kg⁻¹
• None of these
J kg⁻¹k⁻¹

9. Coefficient of linear expansion ‘a’ and coefficient of volume expansion “y’ of a solid are related as-

• Y= 3a
• Y= 2a
• A=3y
• A=y
• Y= 3a

10. Coefficient of area expansion (2) and coefficient of linear expansion(1) of material are related as

• B= 3a
• 3B = 2y
• B=2a
• None of these
B=2a

11. The temperature which has the same numerical value on Celsius and Fahrenheit scale is-

• 273°
• – 40°
• – 273°
• 40°
– 40°

12. The S. I. unit of molar specific heat is-

• J kg1⁻¹k⁻¹
• J mol⁻¹k⁻¹
• J kg⁻¹
• None of these
J mol⁻¹k⁻¹

13. The S. I. unit of latent heat is-

• J kg⁻¹k⁻¹
• J mol⁻¹-k⁻¹
• J kg⁻¹
• None of these
J kg⁻¹

14. Which of the following instrument is used for measuring heat?

• Calorimeter
• Thermometer
• Hydrometer
• Barometer
Calorimeter

15. Cp and Cv are two specific heat capacities of gases

• Less than 1
• Greater than 1
• Equal to 1
• Same for all gasses
Greater than 1

16. Which of the following substances has the greatest specific heat capacity- will be-

• Water
• Salt
• Iron
• Mercury
Water

17. Molar specific heat capacity of nitrogen gas is-

• less than that of hydrogen gas
• greater than that of hydrogen gas
• same as that of hydrogen gas
• None of these
greater than that of hydrogen gas

18. The change of state from solid to liquid is called-

• melting
• vaporization
• fusion
• None of these
melting

19. The change of state from liquid to solid is called-

• melting
• vaporization
• regelation
• fusion