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The presence of which of the below renders clay totally unsuitable for brick manufacture?(a) Kallar(b) Kankar(c) Hay(d) Lime |
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Answer» The correct choice is (a) Kallar Easy explanation: Kallar or Reh consists of sodium sulphate. Bricks do not burn properly in its presence. After burning, it causes the surface of brick to peel off and crumble later on. |
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