Home/
Competitive Exams/
JEE Main & Advanced/
Chemistry/
Metallurgy and Qualitative Analysis/
Question 900003
JEE Chemistry · Medium

Metallurgy and Qualitative Analysis: Thermite process MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Thermite processMediumQuestion 900003

Question

The thermite reaction is: Fe₂O₃ + 2Al → Al₂O₃ + 2Fe. This demonstrates:
  1. A
    Aluminium's greater affinity for oxygen than iron (Ellingham diagram)
    Correct
  2. B
    Iron is more reactive than Al
  3. C
    Thermal decomposition
  4. D
    Electrolytic reduction

Correct answer

Aluminium's greater affinity for oxygen than iron (Ellingham diagram)

Explanation

Thermite reaction: Al displaces Fe from Fe₂O₃ because Al has a more negative ΔGf° for Al₂O₃ than Fe for Fe₂O₃ (Ellingham diagram). Very exothermic → molten Fe is produced. Used for welding railway tracks.

Review Metallurgy and Qualitative Analysis notesStart timed chapter practice