Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
KCET2010ChemistryGeneral Principles and Processes of Isolation of Metals

Carbon can reduce ferric oxide to iron at a temperature above 983 ~K because

Options

  1. Acarbon monoxide formed is thermodynamically less stable than ferric oxide
  2. Bcarbon has a higher affinity towards oxidation than iron
  3. Cfree energy change for the formation of carbon dioxide is less negative than that for ferric oxide
  4. Diron has a higher affinity towards oxygen than carbon

Correct answer

B. carbon has a higher affinity towards oxidation than iron

Step-by-step solution

Above 983 ~K , free energy change for the formation of CO ₂ is more negative than that for ferric oxide. Thus, above this temperature, carbon has a higher affinity towards oxidation than iron.

Practice General Principles and Processes of Isolation of Metals on Quantrex Academy →

More from General Principles and Processes of Isolation of Metals

The metal purified by Mond process is X. The number of unpaired electrons in X is 2025Which of the following are carbonate ores ? I. Siderite II. Kaolinite III. Calamine IV. Sphalerite 2025Which of the following methods is useful for producing semiconductor grade metals of high purity ? 2025Match the following List-I (Process) List-II (Metal) A) Hall-Heroult process I) Ti B) Mond process II) In C) van-Arkel process III) Al D) Zone refining process IV) Ni The correct a 2025Consider the following: Statement-I : In the extraction of Al by Hall-Heroult process, pure Al ₂ O ₃ mixed with Na ₃ ~AlF ₆ lowers its melting point and increases conductivity. Sta 2025Which of the following reactions is an example of roasting ? 2025In the extraction of iron from haematite, the impurity (x) of the ore is removed in the form of ' y ', what are x and y respectively? 2025Which of the following is used as froth stabilizer in froth floatation process? 2025 Full General Principles and Processes of Isolation of Metals list All KCET PYQs