Question: A diathermic wall is one which
A. Prevents thermal interaction
B. Permits thermal interaction
C. Encourages thermal interaction
D. Discourages thermal interaction
Answer: Option B

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More Questions on This Topic :

Question 1. The absolute zero pressure will be
  1.     When molecular momentum of the system becomes zero
  2.     At sea level
  3.     At the temperature of - 273 K
  4.     At the center of the earth
Answer: Option A
Question 2. An actual engine is to be designed having same efficiency as the carnot cycle. such a proposition is
  1.     Feasible
  2.     Impossible
  3.     Possible
  4.     Possible, but with lot of sophistications
Answer: Option D
Question 3. Addition of heat at constant pressure to a gas results in
  1.     Raising its temperature
  2.     Raising its pressure
  3.     Raising its volume
  4.     Raising its temperature and doing external work
Answer: Option D
Explanation :
Question 4. The reading of the pressure gauge fitted on a vessel is 25 bar. the atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. the absolute pressure in the vessel is
  1.     23.97 bar
  2.     25 bar
  3.     26.03 bar
  4.     34.81 bar
Answer: Option C
Question 5. The increase in entropy of a system represents
  1.     Increase in availability of energy
  2.     Increase in temperature
  3.     Decrease in pressure
  4.     Degradation of energy
Answer: Option D
Question 6. Kelvin planck's law deals with
  1.     Conservation of heat
  2.     Conservation of work
  3.     Conversion of heat into work
  4.     Conversion of work into heat
Answer: Option C

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