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Blue litmus paper turns acidic solution to red and does not change colour in basic solution.
Red litmus paper is does not change colour in acidic solution and turns the basic solution blue .
Phenolphthalein is colourless is acidic and pink in basic solution.
methyl orange is red in acidic medium and yellow in basic medium
Blue litmus paper turns acidic solution to red and does not change colour in basic solution.
Red litmus paper is does not change colour in acidic solution and turns the basic solution blue .
Phenolphthalein is colourless is acidic and pink in basic solution.
methyl orange is red in acidic medium and yellow in basic medium