KVPY
Government Jobs Exams
The number of P-H bond(s) in H3PO2, H3PO3 and H3PO4, respectively, is
(A) 2, 0, 1 (B) 1, 1, 1 (C) 2, 0, 0 (D) 2, 1, 0
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KVPY Other Question
In the conversion of zinc ore to zinc metal, the process of roasting involves
(A) ZnCO3 → ZnO (B) ZnO → ZnSO4 (C) ZnS → ZnO (D) ZnS → ZnSO4
When chlorine gas is passed through an aqueous solution of KBr, the solution turns orange brown due to the
formation of
(A) KCl (B) HCl (C) HBr (D) Br2