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Q: Identify the Incorrect statement with respect to burnt bricks.
  • A. Calcium is the major compound present in burnt bricks and it reacts with alumina to from stable and strong bricks.
  • B. Burning of bricks removes the water present in the clay.
  • C. Moulded clay should be heated up 700 to 1000°C to achieve strong and stable bricks.
  • D. Moulded clay should not be heated beyond 1300°C to ensure quality of bricks.
Correct Answer: Option A - Correct statement with respect to burnt bricks– (i) Burning of bricks removes the water present in Burnt bricks and is reacts with alumina to form stable and strong bricks. (ii) Moulded clay should be heated to 700 to 1000⁰C to a achieve strong and stable bricks. (iii) Moulded clay should not be heated beyond 1300⁰C to ensure quality of bricks.
A. Correct statement with respect to burnt bricks– (i) Burning of bricks removes the water present in Burnt bricks and is reacts with alumina to form stable and strong bricks. (ii) Moulded clay should be heated to 700 to 1000⁰C to a achieve strong and stable bricks. (iii) Moulded clay should not be heated beyond 1300⁰C to ensure quality of bricks.

Explanations:

Correct statement with respect to burnt bricks– (i) Burning of bricks removes the water present in Burnt bricks and is reacts with alumina to form stable and strong bricks. (ii) Moulded clay should be heated to 700 to 1000⁰C to a achieve strong and stable bricks. (iii) Moulded clay should not be heated beyond 1300⁰C to ensure quality of bricks.