Q. Chemical formula of washing soda is
- Na2C03 . 7H2O
- Na2C03 . 5H2O
- Na2C03 . 2H2O
- Na2C03 . 10H2O
Answer: Na2C03 . 10H2O
Take Mock Tests
| Government Schemes Mock Test | Start Test! |
| Political Science Mock Test – 42 | Start Test |
| History Test – 190 | Start Test |
| Quantitative Aptitude Test | Start Test! | Data Interpretation - Mock Test | Start Test! |
| General Awareness - Mock Test | Start Test! |
| Reasoning Ability - Mock Test | Start Test! |
We will be happy to hear your thoughts