You are provided with aqueous solutions of three salts —A, B and C, 2-3 drops of blue litmus solution, red litmus solution and phenolphthalein were added to each of thesesolution in separate experiments. The change in coloursof different indicators were recorded in the following table:SampleWith blue litmus solutionWith red litmus solutionWith phenolphthalein solutionANo changeNo changeNo changeBTurns redNo changeNo changeCNo changeTurns blueTurns pinkOn the basis of above observations, identify A, B, and C from the following options:

Question

Examsnet · Accepted Answer

Correct Answer is : A=NaCl,B=NH4Cl,C=CH3COONa

Sample	With blue litmus solution	With red litmus solution	With phenolphthalein solution
A	No change	No change	No change
B	Turns red	No change	No change
C	No change	Turns blue	Turns pink

Sample	Aqueous solution	With blue litmus solution	With red litmus solution	With Phenolphthalein solution
A	Neutral salt (NaCI)	No change	No change	No change
B	Acidic salt(NH4CI)	Turns red	No change	No change
C	Basic salt (CH3COONa)	No change	Turns blue	Turns pink

NTSE Stage 2 SAT 2019 Exam Question Paper