An aqueous solution of baking soda is _______ in nature, few drops of which change the colour of China rose extract to ________.
If a drop of China rose indicator is added to soap solutions, what will be the change in colour of China rose?
In an experiment, Radha took small amounts of an unknown food item in a test tube. Then, she added two drops of copper sulphate solution in the test tube along with a few drops of caustic soda solution. After a few minutes, the colour of the food item changed to violet.
In the given experiment, the change in colour of the food item to violet indicates the presence of
Base added to a China rose solution shows which colour?