- A$1{s^2},2{s^2},2{p_x}^1,2{p_y}^1,2{p_z}^1$
- B$1{s^2},2{s^2},2{p_x}^2,2{p_y}^1,2{p_z}^1$
- ✓$1{s^2},2{s^2},2{p_x}^2,2{p_y}^2,2{p_z}^1$
- D$1{s^2},2{s^2},2{p_x}^2,2{p_y}^2,2{p_z}^2$
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$Ca_3(PO_4)_2 + SiO_2 + C + O_2 + H_2O \to CaSiO_3 + CO_2 + H_3PO_4$
If $1.0\ kg$ each of calcium phosphate and silica are used with excess of $C$ , $O_2$ and $H_2O$ , what is maximum quantity of phosphoric acid that can be produced. $(Ca = 40, P = 31, Si = 28)$
$(A)$ Freezing of water to ice at $0^{\circ} C$
$(B)$ Freezing of water to ice at $-10^{\circ} C$
$(C)$ $N _{2}( g )+3 H _{2}( g ) \rightarrow 2 NH _{3}( g )$
$(D)$ Adsorption of $CO ( g )$ and lead surface
$(E)$ Dissolution of $NaCl$ in water
$(A)$ Ice floats in water.
$(B)$ Higher Lewis basicity of primary amines than tertiary amines in aqueous solutions.
$(C)$ Formic acid is more acidic than acetic acid.
$(D)$ Dimerisation of acetic acid in benzene.
$A_2(g) + 2B(g) \rightleftharpoons C(g) + Q\, kJ$ would be higher at