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Normal boiling points values are for $N H_{3}$ , - 34C, bromine 58°C, carbon tetrachloride 77°C and oxygen - 183°C. Which of these liquids has the highest vapour pressure at room temperature?

A. $N H_{3}$ ,

B. $B r_{2}$

C. $C C l_{4}$

D. $O_{2}$

Correct Answer :

D. $O_{2}$

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