MCQ
$La$ (lanthanum) having atomic number $57$ is a member of
- A$s-$ block elements
- B$p-$ block elements
- ✓$d-$ block elements
- D$f-$ block elements
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$CaC{O_3}\left( s \right)\overset \Delta \longleftrightarrow CaO\left( s \right) + C{O_2} \uparrow ,{K_p} = 8 \times {10^{ - 2}}$
$C{O_2}\left( g \right) + C\left( s \right) \rightleftharpoons 2CO\left( g \right),{K_p} = 2$
[Given : Specific heat of water $=4.18\, \mathrm{~J} \,\mathrm{~g}^{-1}\, \mathrm{~K}^{-1}$
Density of water $=1.00\, \mathrm{~g}\, \mathrm{~cm}^{-3}$ ]
(Assume no volume change on mixing)
$CS_2 + 3O_2 \,\,\to \,\, 2SO_2 + CO_2$