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9th Grade > Physics

THERMAL PROPERTIES OF MATTER MCQs

Total Questions : 107 | Page 1 of 11 pages
Question 1. On heating, the amplitude of vibration of the atoms or molecules of an object
  1.    increases
  2.    decreases
  3.    remains constant
  4.    remain same
 Discuss Question
Answer: Option A. -> increases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. The melting point of water is
  1.    323 °C
  2.    100 °C
  3.    273 °C
  4.    0 °C
 Discuss Question
Answer: Option D. -> 0 °C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. Melting point is also known as
  1.    fusion point
  2.    constant point
  3.    boiling point
  4.    freezing point
 Discuss Question
Answer: Option A. -> fusion point
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. Gaps are left in railway tracks to compensate thermal expansion during
  1.    rainy season
  2.    winter
  3.    hot season
  4.    wind
 Discuss Question
Answer: Option C. -> hot season
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. The coefficient of volume expansion of solids is
  1.    greater than liquids
  2.    equal to gases
  3.    less than liquids
  4.    equal to liquids
 Discuss Question
Answer: Option C. -> less than liquids
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The temperature of land rises more quickly than that of the sea because the specific heat of soil is
  1.    more than water
  2.    less than water
  3.    equal to water
  4.    neutral
 Discuss Question
Answer: Option B. -> less than water
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. The amount of heat required to raise the temperature of 1 kg mass of that substance through 1K is called its
  1.    specific energy
  2.    specific heat
  3.    specific stress
  4.    specific density
 Discuss Question
Answer: Option B. -> specific heat
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. Increase in temperature of the body is proportional to
  1.    amount oh heat absorbed
  2.    amount of heat evolved
  3.    density of substance
  4.    average kinetic energy
 Discuss Question
Answer: Option A. -> amount oh heat absorbed
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. Evaporation takes place at all the temperatures but only from the surface of the
  1.    gas
  2.    liquid
  3.    plasma
  4.    solid
 Discuss Question
Answer: Option B. -> liquid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. SI unit of specific energy is
  1.    Jkg-1
  2.    K-1
  3.    Jkg-1 K-1
  4.    Pa
 Discuss Question
Answer: Option C. -> Jkg-1 K-1
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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