A student was given two test-tubes A and B each containing a colourless solution. When a few drops of universal indicator were added to the two test-tubes, one by one, then the colour of solution in test-tube A changed to blue whereas the colour of solution in test-tube B changed to orange.(a) Which test-tube has a solution of pH higher than 7?(b) Which test-tube has a solution of pH lower than 7?(c) Which test-tube has an acidic solution?(d) Which test-tube has an alkaline solution?

A student was given two test-tubes A and B each containing a colourles

1.	A student was given two test-tubes A and B each containing a colourless solution. When a few drops of universal indicator were added to the two test-tubes, one by one, then the colour of solution in test-tube A changed to blue whereas the colour of solution in test-tube B changed to orange.(a) Which test-tube has a solution of pH higher than 7?(b) Which test-tube has a solution of pH lower than 7?(c) Which test-tube has an acidic solution?(d) Which test-tube has an alkaline solution?
Answer» A student was given two test-tubes A and B each containing a colourless solution. When a few drops of universal indicator were added to the two test-tubes, one by one, then the colour of solution in test-tube A changed to blue whereas the colour of solution in test-tube B changed to orange. (a) Which test-tube has a solution of pH higher than 7? (b) Which test-tube has a solution of pH lower than 7? (c) Which test-tube has an acidic solution? (d) Which test-tube has an alkaline solution?