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NEET
Exam
NEET
Subject
Chemistry
Chapter
s Block Elements

NEET · Chemistry · s Block Elements

What is the chemical process involved in the preparation of calcium...

What is the chemical process involved in the preparation of calcium oxide on a commercial scale?

Options

  1. AElectrolysis of calcium chloride
  2. BHeating of limestone (CaCO3) in a rotary kiln
  3. CCombining calcium and oxygen at high temperature
  4. DOxidation of calcium carbonate (CaCO3) with water vapor

Correct answer

B. Heating of limestone (CaCO3) in a rotary kiln

Step-by-step solution

Calcium oxide (CaO) is prepared on a commercial scale by heating limestone (CaCO3) in a rotary kiln at temperatures ranging from 1070 to 1270 K.
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