Q. Amount of silica that is present in a standard brick is
A
less than 50%
B
Greater than 60%
C
50% to 60 %
D
none of these
Solution:
A standard brick constitutes about 50% to 60% of silica and is the major ingredient in the bricks. Another chief ingredient is Alumina (clay) which constitutes about 20% to 30%.
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