Chemistry - Redox Reactions Question with Solution | TestHub

(A) Zn reacts with dilute HNO₃ to undergo a redox reaction (P), typically producing zinc nitrate and N₂O or NH₄NO₃.

(B) Zn with conc. H₂SO₄ produces ZnSO₄ (metal sulfate, Q), SO₂ (acidic oxide, R), and water via a redox reaction (P).

(C) H₂S and conc. H₂SO₄ react to form colloidal sulfur (yellow turbidity, S) and SO₂ (acidic oxide, R) through redox (P).

(D) FeCl₃ reacts with Na₂S₂O₃ to form Fe²⁺ (green coloration, T) and tetrathionate (thionate, Q) in a redox process (P).