MCQ
The incorrect geometry is represented by
- ✓$NF_3-$ trigonal planar
- B$BF_3-$ trigonal planar
- C$AsF_5-$ trigonal bipyramidal
- D$H_2O-$ bent

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| System $A$ | System $B$ |
| Temprature rise | Temprature remains same |
(Nearest integer)
(Use : $\Delta_{\mathrm{c}} \mathrm{H}($ glucose $)=-2700\, \mathrm{~kJ}\, \mathrm{~mol}^{-1}$ )
$B _{2}, Li _{2}, C _{2}, C _{2}^{-}, O _{2}^{2-}, O _{2}^{+}$and $He _{2}^{+}$