state gov Bihar Police Constable (सिपाही) Mock Test Series 2025 General Science Chemistry Periodic Table

What is the chemical composition of washing soda?

1

Na₂CO₃.10H₂O

2

Al₂(SO₄)₃.10H2O

3

Na₂SO₄.10H2O

4

Al₂(CO₃)₃.10H2O

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