1.

Which of the following is not a feature of second class bricks?(a) Have small irregularities(b) Water absorption is between 20-25%(c) Rectangular in shape(d) Free from cracks

Answer» Correct option is (b) Water absorption is between 20-25%

Easy explanation: The water absorption of second class bricks is less than 22%.  20-25% is the range of water absorption of third class bricks.


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