Question

14. Define rancidity. How can it be prevelleu ! !
15. Balance the equations :
Pb(NO3)2 →PbO + NO2 + O2
NH4OH + FeCl3 Fe(OH)3 + NH4Cl
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Answer 1

Rancidity is a very general term and in its most general meaning,it refers to the spoilage of a food in such a way that it becomes undesirable for consumption.

Answer 2

The last one is wrong in my opinion.