Temperature and Specific Heat MCQ

Test your knowledge with important Temperature and Specific Heat MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Temperature and Specific Heat MCQs at Bissoy

• A spherical body of area A and emissivity e = 0.6 is kept inside a perfectly black body. Energy radiated per second by the body at temperature T is ___________
  ক

  0.4σAT4

  খ

  0.8 σAT4

  গ

  0.6 σAT4

  ঘ

  1.0 σAT4
• Gas thermometers are more sensitive than a mercury thermometer.
  ক

  True

  খ

  False
• A black body is at 727°C. It emits energy at a rate, which is proportional to ___________
  ক

  (727)2

  খ

  (1000)2

  গ

  (727)4

  ঘ

  (1000)4
• A beaker full of hot water is kept in a room. If it cools from 80°C to 75°C in t1 minutes, from 75°C to 70°C in t2 minutes and from 70°C to 65°C in t3 minutes, then ___________
  ক

  t1=t2=t3

  খ

  t1 < t2 = t3

  গ

  t1 < t2 < t3

  ঘ

  t1 > t2 > t3
• If 1g of steam is mixed with 1g of ice, what is the resultant temperature of the mixture?
  ক

  270°

  খ

  230°

  গ

  100°

  ঘ

  50°
• A centigrade and Fahrenheit thermometers are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers 140°. What is the fall in temperature registered by the centigrade thermometer?
  ক

  80°C

  খ

  60°C

  গ

  360°C

  ঘ

  30°C
• Assertion: Good conductors of heat are also good conductors of electricity and vice-versa. Reasons: Mainly electrons are responsible for these conductors.
  ক

  Both assertion and reason are true and the reason is the correct explanation of the assertion

  খ

  Both assertion and reason are true but the reason is not a correct explanation of the assertion

  গ

  Assertion is true but the reason is false

  ঘ

  Both assertion and reason are false
• On increasing the temperature of a substance gradually, its colour becomes ___________
  ক

  Red

  খ

  Green

  গ

  Yellow

  ঘ

  White
• A black body at a high temperature T K radiates energy at the rate of E Wm-2. When the temperature falls to T/2 K, the radiated energy will be ___________
  ক

  E/4

  খ

  E/2

  গ

  2E

  ঘ

  E/16
• The bulb of one thermometer is spherical, while that of other is cylindrical. If both of them have an equal amount of mercury, which one will respond quickly to the temperature?
  ক

  Spherical

  খ

  Cylindrical

  গ

  Elliptical

  ঘ

  Circle
• A constant pressure air thermometer gave a reading of 47.5 units of volume, when immersed in ice-cold water, and 67 units in a boiling liquid. What is the boiling point of the liquid?
  ক

  100°C

  খ

  112°C

  গ

  125°C

  ঘ

  135°C
• A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as ___________
  ক

  Latent heat

  খ

  Sublimation

  গ

  Hoar frost

  ঘ

  Latent heat of fusion