Answers

2014-04-08T12:37:44+05:30
Baking soda, vinegar, LPG gas etc
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2014-04-08T12:38:52+05:30
Acetic acid  i.e vinegar
lactic acid i.e curd
citric acid  i.e fruits like orange , lime etc.
amino acids  i.e protiens present in foods
fatty acids  i.e fat present in foods
oxalic acid  i.e spinach
LPG gas    etc...........
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