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Orthophosphoric acid on heating gives :

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Orthophosphoric acid on heating gives :
A. Metaphosphoric acid
B. Phosphine
C. Phosphorus pentoxide
D. Phosphorus acid
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`underset"Orthophosphoric acid"(H_3PO_4) oversetDeltato underset"Metaphosphoric acid"(H_2O + HPO_3)`
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