MCQ
$s{p^3}$ hybridization leads to which shape of the molecule
- ✓Tetrahedron
- BOctahedron
- CLinear
- DPlane triangle
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Assertion $A$ :Magnesium can reduce $Al _{2} O _{3}$ at a temperature below $1350^{\circ} C$, while above $1350^{\circ} C$ aluminium can reduce $MgO$.
Reason $R$ : The melting and boiling points of magnesium are lower than those of aluminium.
In light of the above statements. choose most appropriate answer from the options given below
$2Zn + {O_2} \to 2ZnO;\Delta H = - 412\,J$
