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(a). What is a universal indicator? For what purrpose is it used? (b). How does a universal indicator work? (c). Water is a neutral substance. What colour will you get when you add a few drops of universal indicator to a test-tube containing water?

Sugar solution is given to you in two separte test tubes in one test tube the solution is saturated while in other it is unsatureated what test would you do to identify them ?

What do you observe when you add a few drops of acetic acid to a test tube containing. (a) phenolphthalein (b) distilled water (c) universal indicator (d) sodium hydrogen carbonate.