railway RRB Group D Mock Test Series 2024-25 General Science Chemistry Equilibrium

PH ସ୍କେଲ କିଏ ଆବିଷ୍କାର କଲା?

1
ଆରେନିଅସ୍
2
ସୋରେନ୍ସନ୍ 
3
ଲୁଇସ୍ 
4
ବ୍ରୋନ୍ଷ୍ଟେଡ୍ ଲୋରି 
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