Question

Think what happens when:-
a) milk is left at room temperature during summers.
b) an iron tawa/ pan/ nail is left exposed to humid atmosphere.
c) grapes get fermented.
d) food is cooked.
e) food gets digested in our body.
f) we respire.

Answer 1

There following statement shows the chemical reaction take place

Answer 2

when milk is left at room temperature during summes get rancid i.e oxidation process the growth of microorganisms occurs due which it get sour in taste and same produre occurs in the following rxns and we conclude that chemical rxn occurs