Answer:
In
the absence of litmus, any other indicator like methyl orange, phenolphthalein,
etc., can be used. Otherwise a natural indicator like turmeric can also be
used.
Some
common indicators with characteristic colours are tabulated below
S. No.
Indicator
Colour in acidic solution
Colour in neutral
solution
Colour in basic solution
1.
2.
3.
4.
Litmus
Phenolphthalein
Methyl orange
Turmeric juice
Red
Colourless
Red/pink
Yellow
Purple
Colourless
Orange
Yellow
Blue
Pink
Yellow
Reddish Brown
You need to login to perform this action.
You will be redirected in
3 sec