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Q. Oxyacids of phosphorous and the starting materials for their preparation are given below
Oxyacid - Materials for preparation
Column I Column II
(A) $H_3PO_2$ (i) Red p+alkali
(B) $H_3PO_3$ (ii) $P_4O_{10}+H_2O$
(C) $H_3PO_4$ (iii) $P_2O_3+H_2O$
(D) $H_4P_2O_6$ (iv) White P+ alkali

Choose the correct answer from the codes given below

KEAMKEAM 2013The p-Block Elements - Part2

Solution:

Oxyacids Materials of preparation
A. $H_3PO_2$ (iv) White p+ alkari
B. $H_3PO_3$ (iii) $P_2O_3+H_2O$
C. $H_3PO_4$ (ii) $P_{4} O_{10}+H_2O$
D. $H_4P_2O_6$ (i) red p+alkari