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9th Grade > Physics

THERMAL PROPERTIES OF MATTER MCQs

Total Questions : 107 | Page 3 of 11 pages
Question 21. If the temperature on the Celsius scale is 20 °C the temperature in kelvin scale is
  1.    294 K
  2.    293 K
  3.    292 K
  4.    300 K
 Discuss Question
Answer: Option B. -> 293 K
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 22. If we convert 400K into the Celsius scale of temperature, we get
  1.    100 °C
  2.    0 °C
  3.    150 °C
  4.    127 °C
 Discuss Question
Answer: Option D. -> 127 °C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 23. Wires on electric poles are given some sag to prevent breaking in
  1.    winter
  2.    rainy season
  3.    hot season
  4.    wind
 Discuss Question
Answer: Option A. -> winter
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 24. On the Celsius scale, the lower fixed point is marked as
  1.    100 °C
  2.    0 °C
  3.    32 °C
  4.    212 °C
 Discuss Question
Answer: Option B. -> 0 °C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 25. The changing of a liquid into vapors from the surface of the liquid without heating it is called
  1.    expansion
  2.    contraction
  3.    evaporation
  4.    fusion
 Discuss Question
Answer: Option C. -> evaporation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 26. Thermal volume expansion of liquid has
  1.    3 types
  2.    2 types
  3.    4 types
  4.    5 types
 Discuss Question
Answer: Option B. -> 2 types
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 27. The heat require to boil 2.5 liters of water at 20 °C is
  1.    840 kJ
  2.    850 kJ
  3.    860 kJ
  4.    890 kJ
 Discuss Question
Answer: Option A. -> 840 kJ
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 28. The temperature coefficient of volume expansion is denoted by
  1.    β
  2.    α
  3.    π
  4.    ω
 Discuss Question
Answer: Option A. -> β
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 29. On the Kelvin 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 A. -> 100 equal parts
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 30. Mercury-in-glass thermometers are used to measure temperature between
  1.    −20 °C to 150 °C
  2.    −10 °C to 270 °C
  3.    −10 °C to 150 °C
  4.    −10 °C to 180 °C
 Discuss Question
Answer: Option C. -> −10 °C to 150 °C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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