The pink colour of phenolphthalein in an alkaline medium is:

  • A
    Due to the negative form
  • B
    Due to the positive form
  • C
    Due to $OH^{-}$ ions
  • D
    Due to the neutral form

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Which indicator works in the $pH$ range of $8 - 9.8$?

The different colours of litmus in acidic,neutral and basic solutions are,respectively.

The indicator used in the titration of $Na_2CO_3$ with $HCl$ is..................

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The best indicator for the detection of the end point in the titration of a weak acid and a strong base is:

Phenolphthalein is the most suitable indicator for the titration of:

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