Question

Give Reasons:
a) Chips packet are flushed with nitrogen gas.
b) Silver chloride is stored in dark coloured bottles.​

Answer 1

Explanation:

(a). Chips packets are flushed with nitrogen gas because it prevents the chips from being oxidised and turn rancid.

(b). Silver chloride is stored in dark coloured bottles because if it will come in sunlight then chlorine gas is formed and only silver metal remain there.

Answer 2

Answer:

a) Chips packeet are flushed with nitrogen gas because it contains fat and oil. when it comes in contact with air and moisture it react with it and made the food unfit for eat and produced bad odour.the substance is said to be rancid and this procees ia called rancidity. To prevent it from rancidity usaually food items are flushed with gases like nitrogen.

b) Silver chloride is stored in dark coloured bottle because it react in light and form siver and chloride ( which is use in black and white photgraphy) .

MORE TO KNOW-

• Prevention of rancidity

i) Using Anti - oxidants

ii) Keeping food in air tight container

iii) Using preservatives like salt , sugar.

iv) Keeping food in refferigirator.

• Silver chloride when kept in sunlight the following reactin occur.

2 AgCl --- ( in sunlight) -- 2Ag + Cl2

It is a type of Decomposition reaction.