Question

it we have 2 test tubes (A&B) containing leland OH, COON On
both acids, which are having pH = 2 (101) and pH = 0 (CHO),​

Answer 1

Answer:

Test tube A contains dilute HCl and test tube B contains dilute NaOH. On adding blue litmus solution to both the test tubes, the colour of test tube A will change from blue to red while the colour of test tube B will remain the same. This is because HCl is acid and acid turns blue litmus to red.