Question

Give 2 measures each for the prevention of:- (a) Rusting of iron (b) rancidity of
fats/oils.

Answer 1

☀️Hey here is your answer ☀️

The method to prevent rusting of iron ....☺️

1)By painting the iron object which do not allowed air to come in contact with iron object

2)By greasing or oiling...The iron object like mechanical tool,machine, part are prevented from rusting with the help of grease or oil

The method to prevent rancidity......☺️

1) rancidity retarted by keeping food in a refrigerator (below 25°C)

2) Rancidity can be retarted by storing food away from light.....



I HOPE IT WILL HELP YOU ☺️☺️

Answer 2

Rust is an iron oxide, a typically red oxide formed in the presence of water or air moisture by the redox reaction of iron and oxygen.

Rusting of iron can be prevented by the following method.

1.        Zinc, which is a highly active metal, covers the iron surface in this method. By loosening electrons, it prevents rusting, which means it is oxidized.

2.        Paint the iron surface with Varnish or oil.

Rancidity is a chemical decomposition of oils and fats that spoils food materials.

It can be prevented by following methods.

1.        The food packets are filled with nitrogen gas.

2.        Food materials should be placed in low temperatures.