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

Related Mcqs:

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

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

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. Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth ?

   A. lime stone and alumina
   B. silica and alkalies
   C. alumina and iron
   D. alkalies and magnesium

4. 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

5. 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

6. 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%

7. The percentage of alumina in a good brick earth lies between________________?

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

8. Excess of silica in brick earth results in______________?

   A. cracking and warping of bricks
   B. loss of cohesion
   C. enhancing the impermeability of bricks
   D. none of the above

9. The main ingredients of Portland cement are________________?

   A. lime and silica
   B. lime and alumina
   C. silica and alumina
   D. lime and iron

10. The proportions of lime and sand in the mortar normally used in brick construction are_______________?

    A. 1:2
    B. 1:4
    C. 1:6
    D. 1:8