MCQ
In the electrothermal process, the compound displaced by silica from calcium phosphate is
- ACalcium
- BPhosphine
- CPhosphorus
- ✓Phosphorus pentoxide
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${C_2}{H_5}Br\xrightarrow{X}{\text{product}}\xrightarrow{{\text{Y}}}{C_3}{H_7}N{H_2}$

