Answers

2016-03-07T21:57:56+05:30
Acids r those substances which turns blue litmus red n basees r those which turns red litmus blue.
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2016-03-07T22:10:07+05:30
Acid is a substance Whose PH is between 1 to 6.5.
Base is a substance whose PH is more than 7.
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Materials like Lemon, Vinegar and Tamarind taste sour due to presence of chemicals in them. These
chemicals are acids.
Some Material like baking soda and soap taste bitter due to presence of chemicals in them called bases.