MCQ
$B.P.$ of ${H_2}O\,({100\,^o}C)$ and ${H_2}S\,( - {42\,^o}C)$ explained by
- AVander Waal's forces
- BCovalent bond
- ✓Hydrogen bond
- DIonic bond
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$2Zn + {O_2} \to 2ZnO;\Delta H = - 412\,J$