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

What principle is the basis for zone refining?

Options

  1. ASolubility of impurities in the solid state
  2. BThe melting point of metals
  3. CSolubility of impurities in the melt
  4. DMetal crystallization

Correct answer

C. Solubility of impurities in the melt

Step-by-step solution

Zone refining is based on the principle that impurities are more soluble in the melt than in the solid state of the metal.

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

More from General Principles and Processes of Isolation of Metals

The reaction that does NOT takes place in blast furnace between 900K and 1500K temperature range during the extraction of iron is: 2023Read the following statements and choose the set of correct statements: (A) Chrome steel is used for cutting tools and crushing machines. (B) The fine dust of aluminium is used in 2023Match List-I with List-II. List-I (Ores) List-II (Composition) (a) Haematite (i) Fe 3 O 4 (b) Magnetite (ii) ZnCO 3 (c) Calamine (iii) Fe 2 O 3 (d) Kaolinite (iv) Al 2 ( OH ) 4 Si 2022Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature? 2021The maximum temperature that can be achieved in blast furnace is: 2021Identify the correct statement from the following: 2020Match the elements in Column I with methods of purification in Column II. Column-I Column-II (a) Boron (p) Van Arkel method (b) Tin (q) Mond's process (c) Zirconium (r) Liquati 2020Assertion : ZrI ₄ is useful in purification of zirconium (Zr). Reason : ZrI ₄ sublimise at room temperature. 2019 Full General Principles and Processes of Isolation of Metals list All NEET PYQs