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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
General Principles and Processes of Isolation of Metals

NTA Abhyas 2020 · Chemistry · General Principles and Processes of Isolation of Metals

Blister copper is refined by stirring molten impure metal with...

Blister copper is refined by stirring molten impure metal with green logs of wood because such a wood liberates hydrocarbon gases (like CH4C{H}_{4} ). This process X is called ________ and it is used to purify the metal that initially contain impurities of Y. Y is _______.

Options

  1. AX = poling, Y = CuO2Cu{O}_{2}
  2. BX = cupellation, Y = CuO
  3. CX = cupellation, Y = ZnO
  4. DX = poling, Y = Cu2OC{u}_{2}O

Correct answer

D. X = poling, Y = Cu2OC{u}_{2}O

Step-by-step solution

Poling is a purification process which is used for metals which contains their own oxide as impurity.
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