Question

The approximate percentage of silica in cement is:
(a) 5 – 10%
(b) 15 – 20%
(c) 20 – 25%
(d) 25 – 30%

Answer 1

approx. percentage of silica in cement = 17-25%

according to this question , May be your answer will option (b) 20-25%
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Answer 2

Answer:

The percentage is 17% - 25%

Explanation:

Silicon is chemical element, it is also named as silicon dioxide. Chemical formula of silicon is $SiO_2$ which is commonly found in different living organisms and in nature of quartz. It is a complex and mostly found family in materials which are also exist in several minerals.

Silicon is the most plentiful element in the earth. It is used in microelectronics, structural materials like cements and also used as parts of food industries.