^{0}C is cooled to 7

^{0}C at constant pressure, its final volume will be

a) 135 ml

b) 540 ml

c) 350 ml

d) 280 ml

Answer: d

Explanation: At constant pressure

\[\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}} \Rightarrow \frac{300}{300}=\frac{V_{2}}{280}\] or V

_{2}= 280 ml

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