Question

(1) Name the phenomenon due to which the smell and taste of oily foods change when left for a long time suggest a method to prevent it. (2) Give an example of a combination reaction which is exothermic. (3) Identify the compound oxidised and the compound reduced in the following reaction. MnO2 +4HCl MnCl2 +2H2O + CL2​

Answer 1

1) Rancidity is phenomena and it can be prevented by flushing nitrogen in packets of food and making it air tight .

2)CaO + H2O gives Ca(OH)2 + HEAT

3)IS in attachment .

If it helped mark it as BRAINLIEST !

Answer 2

Ans 1 phenomenon is Rancidity

Ans 2 2Mg+2O2=2MgO+Heat

Ans 3 I don't know