Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Equilibrium
The colour of Phenolphthalein in acidic and basic solutions are_________, respectively
1
colourless and pink
2
pink and colourless
3
blue and red
4
More than one of the above.
5
None of the above.