Question

The correct method of finding the pH of a solution is to i. heat the solution in a· testtube and expose the pH paper to the vapours formed ii. pour few drops of the solution from the test tube on the pH paper iii. drop the pH paper in the solution iv. put a drop of a solution on the pH paper using a dropper

Answer 1

the answer is 4th.put a drop of a solution on the pH paper using a dropper.