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Which of the following is not present in...

Which of the following is not present in portland cement?
`SiO`
`Al_2 O_3`
`CaO`
`Cd O`.

A

`SiO`

B

`Al_2 O_3`

C

`CaO`

D

`Cd O`

Text Solution

Verified by Experts

The correct Answer is:
D
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