A student was given an unknown solution in a test tube. When he added universal indicator solution to the test tube the solution turned violet. The unknown solution is most likely to be:

When a student added universal indicator solution to one of the following chemicals its colour changed to nave blue. The chemical is most likely to be:

When a student put some copper turnings in a colourless solution, he observed that the solution gradually turned blue. The solution is most likely to be:

A student took solution X in a test -tube and added a few drops of universal indicator to it. The solution turned blue. On addind another solution Y to this test tube drop wise, the colour of solution changed to green. When a yet another solution Z was added the solution turned yellow. Which of the following gives the correct conclusion of the student?

Two solutions X and Y are tested with universal indicator. Solution X turns orange whereas solution Y turns red. Which of the solutions is a stronger acid?

A student was given four unknown solutions in test tubes marked A,B,C and D and asked to test them with universal indicator solution. He observed that on putting universal indicator solution, the solutions A,B,C and D turned blue, orange, green and red respectively. The test tube which contains sodium chloride solution is:

A student was asked to test an unknown colourless solution with an indicator. When he added a few drops of phenolphthalein indicator, the solution turned pink. Which one of the following chemicals should be added in excess so as to obtain the colourless solution again?

What happens when a solution of an acid is mixed with a solution of a base in a test tube?

What happens when a solution of an acid is mixed with a solution of a base in a test tube ? The temperature of the solution increases The temperaure of the solution decreases The temperature of the solution remains constant Salt formation takes place

When blue litmus was added to an unknown liquid in a test tube, it turned red. What was the liquid?