A first class brick when immersed in cold water for 24 hours should not absorb water more than______________?

Related Mcqs:

1. Which of the following ingredients of the brick earth enables the brick to retain its shape ?

   A. alumina
   B. silica
   C. iron
   D. magnesia

2. The frog of the brick in a brick masonry is generally kept on______________?

   A. bottom face
   B. top face
   C. shorter side
   D. longer side

3. A good building stone should not absorb water more than_____________?

   A. 5%
   B. 10%
   C. 15%
   D. 20%

4. Crushing strength of a first class brick should not be less than_____________?

   A. 3.5 N/mm2
   B. 7.0 N/mm2
   C. 10.5 N/mm2
   D. 14.0 N/mm2

5. The process of mixing clay, water and other ingredients to make brick is known as______________?

   A. kneading
   B. moulding
   C. pugging
   D. drying

6. The main function of alumina in brick earth is_______________?

   A. to impart plasticity
   B. to make the brick durable
   C. to prevent shrinkage
   D. to make the brick impermeable

7. Excess of alumina in brick earth makes the brick______________?

   A. impermeable
   B. brittle and weak
   C. to lose cohesion
   D. to crack and warp on drying

8. Percentage of silica in a good brick earth lies between_______________?

   A. 5 to 10%
   B. 20 to 30%
   C. 50 to 60%
   D. 70 to 80%

9. In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as_______________?

   A. English bond
   B. double flemish bond
   C. zigzag bond
   D. single flemish bond

10. The stretcher bond in brick masonry can be used only when the thickness of wall is_____________?

    A. 90 mm
    B. 180 mm
    C. 190 mm
    D. 280 mm