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05/10/2020 10:42 am
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A gas cylinder containing cooling gas can withstand a pressure of 14.9 atmosphere. The pressure gauge of cylinder indicates 12 atmospheres at 27°C. Due to sudden fire in the building the temperature starts rising. The temperature at which cylinder explodes is :
(a) 87.5°C
(b) 99.5°C
(c) 115.5°C
(d) 135.5°C
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05/10/2020 10:49 am
(b) 99.5°C
Explanation:
From Charle's law, P1/T1 = P2/T2
12/(273 + 27) = 14.9/T2
T2 = 14.9 x 300/12 = 372.5 K
= 372.5 – 273 = 99.5°C