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?

(i) Two solutions X and Y are tested with universal indicator. Solutions X turns orange whereas solution Y turns red. Which of the solutions is a stronger acid? (ii) State the meaning of strong acids and weak acids. Give one example of each.

A solution turns blue litmus red. The pH of the solution is probably.

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:

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:

The turmeric solution will turn red by an aqueous solution of

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?

A solution turns red litmus blue its ph is: