Value of Coefficient of Thermal Expansion For Ordinary Concrete

The value of coefficient of thermal expansion for ordinary concrete is

[A] 9*10^-6 to 12*10^-6 /°C
[B] 9*10^-7 to 12*10^-7 /°C
[C] 8*10^-6 to 12*10^-6 /°C
[D] 9.5*10^-6 to 11*10^-6 /°C

ANSWER = [A] 9*10^-6 to 12*10^-6 /°C
Explain:- Correct answer for the question The value of coefficient of thermal expansion for ordinary concrete is [A] 9*10^-6 to 12*10^-6 /°C

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