MCQ
Mass and energy are conserved is demonstrated by
- AFirst law of thermodynamics
- BLaw of conservation of energy
- CLaw of conservation of mass
- ✓Modified form of 1st law of thermodynamics
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$I.$ $H_2O_2$ $II.$ $O_2$ $III.$ $O_3$
(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1}{CaCO}_3: 100, \mathrm{MgCO}_3: 84)$