(A) 5 to 10% (X)
(B) 20 to 30% (X)
(C) 50 to 60% ()
(D) 70 to 80% (X)
Answers: Percentage of silica in a good brick earth lies between 50 to 60%.
(A) 5 to 10% (X)
(B) 20 to 30% (X)
(C) 50 to 60% ()
(D) 70 to 80% (X)
Answers: Percentage of silica in a good brick earth lies between 50 to 60%.
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