Two solutions A and B have pH values of 3 and 8. Which solution will turn phenolphthalein solution pink?

Take water in 4 different beakers and add a small piece of sodium,lead,iron and copper in each: Which solution will turn pink on adding phenolphthalein? Why?

One litre of a 0.02 M solution of HCI is mixed with one litre of a 0.01 M solution of NaOH. The pH of the resulting solution will be

Two solutions of glucose have osmotic pressures 1.5 and 2.5 atm. 1 litre of first solution is mixed with 2 litre of second solution. The osmotic pressure of the resultant solution will be:

The 'pH' of a '10^(-8) M' solution of 'HCl' is: