Teaching EMRS JSA (Junior Secretariat Assistant) Mock Test Series 2023 General Science Chemistry Chemistry in Everyday Life

ನೀರಿನ ಶಾಶ್ವತ ಗಡಸುತನವನ್ನು ತೆಗೆದುಹಾಕಲು ಯಾವ ಉಪ್ಪನ್ನು ಬಳಸಲಾಗುತ್ತದೆ?

1
CaOCl 2
2
NaHCO 3
3
Na2CO 3 .10 H 2 O
4
CaSO 4 . 2H 2 O
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