railway DFCCIL Executive 2025 Mock Test Construction Materials and Management Cement

Consider the following oxides:

1. Al2O3

2. CaO

3. SiO2

The correct sequence in increasing order of their percentage in an ordinary Portland cement is

1
2, 1, 3
2
1, 3, 2
3
3, 1, 2
4
1, 2, 3
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