MCQ
Which of the following pair of orbitals posses two nodal planes
- A${p_{xy}},\,\,{d_{{x^2} - {y^2}}}$
- ✓${d_{xy}},\,{d_{zx}}$
- C${p_{xy}},\,{d_{zx}}$
- D${d_{{z^2}}},\,{d_{{x^2} - {y^2}}}$
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${H_2}O(g){\mkern 1mu} {\mkern 1mu} + {\mkern 1mu} CO{\mkern 1mu} (g){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \rightleftharpoons \,{H_2}(g)\, + \,C{O_2}(g)\, + \,Heat{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} $
$Ca(OH)_2 + H_3PO_4\to CaHPO_4 + 2H_2O$ is
$C{H_3}CHBrC{H_2}C{H_3}\xrightarrow{{alc.\,KOH}}$
$(i)$ $C{H_3}CH = CHC{H_3}$ (major product)
$(ii)$ $C{H_2} = CHC{H_2}C{H_3}$ (minor product)
$4H_{(g)} \rightarrow 2H_{2(g)}$ is $-869.6\ kJ$
The dissociation energy of $H - H$ bond is ............ $\mathrm{kJ}$