The slag formed in the electrical process of manufacture of phosphorus is
Carbon dioxide
Calcium phosphate
Phosphine
Calcium silicate
The allotropic form of phosphorus used as rat poison is
Violet phosphorus
Red phosphorus
White phosphorus
Scarlet phosphorus
Phosphorus reacts with sodium hydroxide to give
Phosphate
Phosphide
Phosphoric acid
Phosphorite is
3 Ca3(PO4)2 CaCl2
3 Ca3(PO4)2 CaF2
Ca3(PO4)3
H3PO4
The percentage of calcium phosphate present in bones are
50%
60%
75%
45%
The impurities in phosphorus is removed by
Redox reaction
Oxidation
Reduction
Decomposition
Super Phosphate is a
Nitrogenous fertilizer
Phosphatic fertilizer
Potassium fertilizer
Calcium fertilizer
The melting point of phosphorus is
35°C
60°C
44°C
55°C
Phossy jaw is caused due to the presence of
Sodium
Chlorine
Phosphorus
Calcium
Phosphorus pentoxide dissolves in cold water to form
Meta phosphoric acid
Ortho phosphoric acid
Phosphorus acid
