SSC CSIR ASO/SO Mock Test 2023 General Science Chemistry Chemistry in Everyday Life

ବିଶ୍ୱ ସ୍ୱାସ୍ଥ୍ୟ ସଂଗଠନ ଅନୁସାରେ, ମୃଦୁ ଜଳରେ 0 ରୁ _____ ମିଲିଗ୍ରାମ ପ୍ରତି ଲିଟର CaCO3 ଥାଏ।

1
30
2
60
3
90
4
120
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