May I know the pH test details?

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I want to take the pH test and I want to know whether it is online based or a pen-and-paper. And if it’s a pen-and-paper, is it a multiple choice or should I provide the complete solution?

It is a pen-and-paper test.
Multiple choice is provided to all the questions

thank you very much. is it bubbling system?

yes

Thanks for the assistance.