1) what is litmus paper a) indicator b) its just paper c) its an acid 2) Which one of the following is acidic? a) milk b) tomato c) citrus fruits d) all of these 3) Which one of the following will turn red litmus blue? a) a) Vinegar b) (b) Baking soda solutio c) c) Lemon juice d) (d) Soft drinks 4) Which of the following strongest acid ? a) sulphuric acid b) carbonic c) vinegar d) methanoic 5) Name a substance which is used to cure the discomfort caused by indigestion due to over eating. a) milk of magnesia b) Hcl c) sulphuric acid

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