Building Materials The percentage of alumina in a good brick earth lies between 20 to 30 % 50 to 60 % 70 to 80 % 5 to 10 % 20 to 30 % 50 to 60 % 70 to 80 % 5 to 10 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials Jhumb bricks are Over burnt None of these Kutcha Under burnt Over burnt None of these Kutcha Under burnt ANSWER DOWNLOAD EXAMIANS APP
Building Materials Proper amount of entrained air in concrete results in(i) Better workability(ii) Better resistance to freezing and thawing(iii) Lesser workability(iv) Less resistance to freezing and thawing (i) and (iv) (iii) and (iv) (i) and (ii) (ii) and (iii) (i) and (iv) (iii) and (iv) (i) and (ii) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Asbestos All of these Is a natural fibrous mineral substance Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Contains iron oxide and alumina All of these Is a natural fibrous mineral substance Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Contains iron oxide and alumina ANSWER DOWNLOAD EXAMIANS APP
Building Materials The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is 3 4 2 1 3 4 2 1 ANSWER DOWNLOAD EXAMIANS APP
Building Materials Due to attack of dry rot, the timber Reduces to powder Shrinks None of these Cracks Reduces to powder Shrinks None of these Cracks ANSWER DOWNLOAD EXAMIANS APP
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