Temperature at which the kinetic energy of the gas molecules doubles

1. A.
   $1227^{\circ}C$
2. B.
   $927^{\circ}C$
3. C.
   $327^{\circ}C$
4. D.
   $627^{\circ}C$

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1. A.
   $- 39^{\circ}C$
2. B.
   $117^{\circ}C$
3. C.
   $127^{\circ}C$
4. D.
   $- 78^{\circ}C$

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