See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(A)     2 2 4 4 2 2 Ba NO H SO BaSO HNO (B) HNO3 is oxidizing acid, which oxidize H2S to ‘S’. (C) 4 2 3 2 2 P 3NaOH 3H O PH 3NaH PO     (D)   3 4 2 4 4 3 4 2 Ca PO 3H SO 2CaSO 2H PO   