What are the uses of oxygen?

Question

Uses of oxygen

Answer 1

Air enriched with oxygen is used by people with breathing difficulty

Answer 2

Used by patients with breathing difficulties
A mixture of oxygen and acetylene produces heat used in welding 
Mixture of oxygen and helium is used by deep see divers and mountain climbers

Answer 3

Air enriched with oxygen is used in hospitals for breathing 
Mixed with helium,used by mountain climbers 
In making of steel,is used to remove impurities 
Used as fuel

Answer 4

Use for breathing,

Answer 5

Used in burning
Used in rusting
Used in breathing

Answer 6

Is used for respiration in living organisms 
 it is used for manufacturing steel oxygen is used to mix charcoal and petrol that is used as an  explosive in mines

Answer 7

Used by mountain climbers

Answer 8

Oxygen is mix with hexane and it's used by mountain climbers

Answer 9

Oxygen is mix with hexane and it's used by mountain climbers

Answer 10

Mix with hydrogen and use in welding
 Mix with hexane and use by mountain climbers
Use for combustion 
Use for breathing