A. 3.5 N/mm2
B. 7.0 N/mm2
C. 10.5 N/mm2
D. 14.0 N/mm2
0
The age of a tree can be known by examining_________________?
0
Excess of alumina in brick earth makes the brick______________?
A. cambium layer
B. annular rings
C. medullary rays
D. heart wood
0
Percentage of silica in a good brick earth lies between_______________?
A. impermeable
B. brittle and weak
C. to lose cohesion
D. to crack and warp on drying
0
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%
0
The nominal size of the modular brick is_______________?
A. 5 to 10%
B. 20 to 30%
C. 50 to 60%
D. 70 to 80%
0
Excess of silica in brick earth results in______________?
A. 190 mm x 90mmx 80 mm
B. 190 mm x 190 mm x 90 mm
C. 200 mm x 100 mm x 100 mm
D. 200 mm x 200 mm x 100 mm
0
Which of the following ingredients of the brick earth enables the brick to retain its shape ?
A. cracking and warping of bricks
B. loss of cohesion
C. enhancing the impermeability of bricks
D. none of the above
0
The process of mixing clay, water and other ingredients to make brick is known as______________?
A. alumina
B. silica
C. iron
D. magnesia
0
The internal size of mould used in brick preparation is__________________?
A. kneading
B. moulding
C. pugging
D. drying
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