Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Equilibrium
A litmus paper was used to check the pH of a solution. The solution turns blue litmus red, its pH is likely to be:
1
5
2
8
3
9
4
More than one of the above
5
None of the above