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Oxygen
It is essential for Life.Animals and Humans inhale oxygen (breathe oxygen)
It is used for burning(Combustion) of fuels in homes,factories and transport vehicles
Nitrogen
It is used to Make Fertilizers which help plant grow
It is used in food packing industry to keep the food fresh
Chlorine
It Is used in Water Purification
Iodine
Iodine is used as antiseptic for wounds
Explanation
A tincture(small quantity) of iodine is used to make purple coloured solutuion
This solution is used as antiseptic medicine in case of wounds
Sulphur and Phosphorous
They are used in crackers
Sulphur
Used for hardening of Rubber
Carbon
It is used as fuel
