Question

. Give reasons for the following-
Keeping food in air tight containers help in preventing rancidity.
Moist air and acidic gases are not good for some metals.
White coloured silver chloride turns grey when kept in sunlight.
Decomposition reaction called the opposite of combination reaction.
Can a displacement be a redox reaction?
vi. Corrosion of aluminium is considered to be advantageous.
Hydrogen peroxide is kept in coloured bottles.
viis. Quick lime is used in whitewashing the walls.
Respiration is considered an exothermic process.
We cannot stir silver nitrate solution with copper spoon.
xi. Gold and platinum do not get affected even if there is a presence of moist air and acidic gases,
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Answer 1

food is kept in airtight container because it stops the flow od air to food which contains many different type of harmfull elements