Question

Which one of the following option is natural indicators? (a) litmus and hydrangeas , (b) litmus and Methyl orange, (c) hydrangeas and phenolpthalein, and (c) hydrangeas and phenolpthalein.

Answer 1

NATURAL INDICATORS :1.TURMERIC - ...2.CHINA ROSE PETALS : ...3.LITMUS : ...4.RED CABBAGE JUICE : Red cabbage juice turns blue in a basic solution but it shows a distinct red colour in an acidic solution.SYNTHETIC INDICATORS :1.PHENOLPHTHALEIN :Its original colour is colourless.