MCQ
In a given shell, the order of screening effect is
- ✓$s > p > d > f$
- B$f > d > p > s$
- C$p < d < s < f$
- D$d > f < s > p$
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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. $(Ca = 40, P = 31, Si = 28)$