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Question

At a temperature, T in K, the pressure of 4 g argon in a bulb is P. The bulb is put in a bath having a temperature higher by 50 K than the first one. 0.8 g of argon gas had to be removed to maintain original pressure. The temperature T is equal to :

A
510 K
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B
200 K
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C
100 K
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D
73 K
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Solution

The correct option is B 200 K
The temperature is changed from T to T+50 K.
Mass (W) is changed from 4 g to (40.8)=3.2 g
WT=WT
4g×TK=3.2g×(T+50)K
4T=3.2T+160
0.8T=160
T=200 K

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