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9th Grade > Physics

THERMAL PROPERTIES OF MATTER MCQs

Total Questions : 107 | Page 2 of 11 pages
Question 11. The molecules of a solid vibrate with larger amplitude at
  1.    zero temperature
  2.    lower temperature
  3.    higher temperature
  4.    pressure
 Discuss Question
Answer: Option C. -> higher temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 12. A container has 2.4 liters of water at 20 °C. The heat required to boil the water is
  1.    1500 kJ
  2.    1258 kJ
  3.    1344 kJ
  4.    698 kJ
 Discuss Question
Answer: Option C. -> 1344 kJ
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 13. On the Fahrenheit scale, the interval between the lower and upper fixed points is divided into
  1.    100 equal parts
  2.    180 equal parts
  3.    50 equal parts
  4.    90 equal parts
 Discuss Question
Answer: Option B. -> 180 equal parts
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 14. In liquid glass thermometer when bulb comes in contact with a hot object, the liquid inside it
  1.    expands
  2.    contracts
  3.    remains same
  4.    none of above
 Discuss Question
Answer: Option A. -> expands
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 15. An increase in breadth, length, and thickness of a substance is due to
  1.    fusion
  2.    thermal expansion
  3.    stress
  4.    boiling
 Discuss Question
Answer: Option B. -> thermal expansion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 16. On the Fahrenheit scale, the upper fixed point is marked as
  1.    32 °F
  2.    212 °F
  3.    100 °F
  4.    0 °F
 Discuss Question
Answer: Option B. -> 212 °F
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 17. Once heats enter a body, it becomes its
  1.    constant energy
  2.    negative energy
  3.    external energy
  4.    internal energy
 Discuss Question
Answer: Option D. -> internal energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 18. If the surface area of liquid is large then evaporation will be
  1.    small
  2.    large
  3.    moderate
  4.    slow
 Discuss Question
Answer: Option B. -> large
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 19. The fraction change in the volume per kelvin change in temperature is equal to
  1.    coefficient of linear thermal expansion
  2.    temperature coefficient of volume expansion
  3.    pressure expansion
  4.    coefficient of contraction
 Discuss Question
Answer: Option B. -> temperature coefficient of volume expansion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 20. More molecules of a liquid move with high velocities at
  1.    pressure
  2.    zero temperature
  3.    lower temperature
  4.    higher temperature
 Discuss Question
Answer: Option D. -> higher temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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