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  • Following statements are given : (A) The average kinetic energy of a gas molecule decreases when the temperature is reduced. (B) The average kinetic energy of a gas molecule increases

Following statements are given :
(A) The average kinetic energy of a gas molecule decreases when the temperature is reduced.
(B) The average kinetic energy of a gas molecule increases with increase in pressure at constant temperature.
(C) The average kinetic energy of a gas molecule decreases with increase in volume.
(D) Pressure of a gas increases with increase in temperature at constant pressure.
(E) The volume of gas decreases with increase in temperature.
Choose the correct answer from the options given below :
 

Option: 1

(A) and (D) only
 


Option: 2

(A), (B) and (D) only
 


Option: 3

(B) and (D) only
 


Option: 4

(A), (B) and (E) only


Answers (1)

best_answer

The average Kinetic energy of a gas molecule is say \mathrm{K E}

\mathrm{K E=\frac{3}{2} K_B T=\frac{3}{2} P \mathrm{V}}
\rightarrow with reduction in temperature, the KE of a gas molecule decreases
\rightarrow Pressure of a gas increases with increase in temperature at constant volume
Hence (1) is correct option.

Posted by

Deependra Verma

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