MCQ
Bohr proposed his atomic model based on :
- AOil drop experiment.
- ✓Planck's quantum theory.
- C$x-$ ray scattering experiment.
- DExperiments on conduction of gases.
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(Nearest integer)
[Atomic weight : $\mathrm{H}=1.008 ; \mathrm{C}=12.00 ; \mathrm{O}=16.00$ ]

$C + 2S \to CS_2 ; \,\Delta H_f^o = +117.0\,kJ\,mol^{-1} .......(1)$
$C + O_2 \to CO_2 ; \,\Delta H_f^o = -393\,kJ\,mol^{-1} .......(2)$
$S + O_2 \to SO_2 ; \, \Delta H_f^o = -297\,kJ\,mol^{-1} .......(3)$
The heat of reaction of
$CS_2 + 3O_2 \to CO_2 + 2SO_2$ is
.....$kJ\,mol^{-1}$