29 verified questions · ~26 minutes · answer key checked against the official NTA final key across multiple sources. Text-only questions (diagram-based excluded until they can be shown properly).
The following reaction occurs in the blast furnace where iron ore is reduced to iron metal: Fe₂O₃(s) + 3CO(g) ⇌ Fe(l) + 3CO₂(g) Using the Le Chatelier's principle, predict which one of the following will not disturb the equilibrium.
Identify compound (Z) in the following reaction sequence. Chlorobenzene + NaOH —(623 K, 300 atm)→ X —(HCl)→ Y —(conc. HNO₃)→ Z
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