Page 2 - 4. HOME ASSIGNMENT-( INDICATORS OF ACIDS & BASES)
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SUBJECTIVE:

                 S.LNo.                              Questions                              Mark  Skill
                 Q.1     Acids are  .......... in taste and change the colour of blue       1      R
                         litmus to---------. .


                 Q.2     .......... is a natural indicator whereas  ........ is a synthetic   1    u
                         indicator.  A  ............................................... indicator is a
                         mixture of several indicators.

                 Q.3     What will be the action of the following substances on litmus      3      R+A
                         paper? Dry HCl gas, Moistened NH3 gas, Lemon juice,
                         Carbonated soft drink, Curd, Soap solution.
                 Q.4     Name the acid present in ant sting and give its chemical           3      U+A
                         formula. Also give the common method to get relief from the
                         discomfort caused by the ant sting.
                 Q.5     A student prepared solution of (i) an acid and (ii) a base in      5      HOT
                         two separate beakers. She forgot to label the solutions and
                         litmus paper is not available in the laboratory. Since both the
                         solutions are colourless, how will she distinguish between
                         the two?




















































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