Home › Previous year questions › GATE 2021 AR › Question 15GATE 2021 AR – Question 15 Building Construction, Materials, and Structural Systems · Building materials characteristics & applications · 1 mark · Multiple choice
What is the correct order of stages in brick firing?
Dehydration → oxidation → vitrification → cooling Vitrification → dehydration → oxidation → cooling Oxidation → dehydration → vitrification → cooling Cooling → oxidation → vitrification → dehydration Practise this question in The GATE Grind →
Show answer and explanation Correct answer: (A) Dehydration → oxidation → vitrification → cooling
Explanation Heating first removes water, then drives oxidation and related chemical changes, followed by higher-temperature vitrification, and finally controlled cooling. This order is A. Vitrification cannot sensibly precede initial moisture removal in the intended sequence.
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