Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Equilibrium
0.45 gm of acid (MW = 90) was exactly neutralised by 20 ml. of 0.5 N NaOH. The basicity of the acid is-
1
1
2
2
3
3
4
More than one of the above
5
None of the above