Question

boojho paheli and their friend golu were provide with test tube each containing china rose solution which has pink colour bhoojho added two drops of solution A in his test tube and got dark pink colour pheli added two drops of solution B two her test tube and got green colour golu added two drops of solution C but could not get any change in colour suggest the possible causes for the variation in their results

Answer 1

it can possible that solution c did not reacts with the chemical

Answer 2

China rose solution is a Natural indicator, which is pink in colour.
It becomes dark pink in the presence of an acid and turns green in the presence of a base. No change in colour means a neutral substance is added to it.
So, the dark pink colour on addition of substance A confirms that A is an acid.
The green colour solution obtained on adding a substance B confirms that B is a base
No change in colour on addition of a substance C confirms that C is a neutral substance.
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