Question : The approximate amount of silica present in cement is:
Option 1: between 27% and 35%
Option 2: between 37% and 45%
Option 3: between 17% and 25%
Option 4: between 47% and 55%
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Correct Answer: between 17% and 25%
Solution : The correct option is between 17% and 25% .
Silica, often known as silicon dioxide, is the second most common cement ingredient, accounting for 17 to 25%. Cement is mixed with lime to increase setting time and serve as a binding agent. Because silica and calcium oxide combine to generate calcium silicates, the primary constituent of cement, silica plays a significant role in the composition of cement.
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Question : The value of tan 25° tan 35° tan 45° tan 55° tan 65° is:
Question : The median of the following data will be _________. 32, 25, 33, 27, 35, 29, and 30
Question : If $\cos\theta = \frac{35}{37}$, then what is the value of $\cot \theta$?
Question : Directions: If 11 & 25 = 18, 12 & 20 = 16 then, what is the value of 4 & 50 = ?
Question : The third proportion to 25 and 35 is:
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