JEE Main 2013 Chemistry question

Not in JEE Main or NEET syllabus

Calcination is the process in which:

(1)ore is heated above its melting point to expel or or
(2)ore is heated below its melting point to expel volatile impurities
(3)ore is heated above its melting point to remove S, As and Sb as , and respectively
(4)ore is heated below its melting point to expel or Correct

Answer: (4)

Solution

Calcination is heating the ore below its melting point, usually in limited air, to drive off water

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Question ID VK-103944