Question
Chemistry Question on Equilibrium
Which of the following indicator is known as metal indicator?
A
Phenolphthalein
B
Phenol red
C
Eriochrome-black-T
D
Methyl orange.
Answer
Eriochrome-black-T
Explanation
Solution
Eriochrome black - T : 
Which of the following indicator is known as metal indicator?
Phenolphthalein
Phenol red
Eriochrome-black-T
Methyl orange.
Eriochrome-black-T
Eriochrome black - T :