Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET2015ChemistryGeneral Principles and Processes of Isolation of Metals

Which of the following process does not involve heating?

Options

  1. ACalcination
  2. BSmelting
  3. CRoasting
  4. DLevigation

Correct answer

D. Levigation

Step-by-step solution

Levigation or gravity separation is the process of separating the light impure particles from the heavier ore particles by washing in current of water.

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 AP EAMCET PYQs