MCQ
Heavy water freezes at ......... $^oC$.
- A$0$
- ✓$3.8$
- C$38$
- D$ - 0.38$
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| $p ( mm Hg )$ | $50$ | $100$ | $200$ | $400$ |
| Relative $t _{1 / 2}( s )$ | $4$ | $2$ | $1$ | $0.5$ |
The order of the reaction is
