The concept of pHwas first introduced by
Hydrangea blossoms blue when soil is
Which colour phenolphthalein shows in acidic medium?
pH of milk is 6.7.So milk is
The universal indicator is
A solution shows pink colour on pH scale .It is
Red cabbage acts as a pH indicator due to the presence of
What may be the pH of detergents?
Litmus paper shows red colour in which medium?
Methyl orange is an indicator which is a