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The following observation are shown by...

The following observation are shown by

A

a.it is used for lifting airships and balloon for metreological purpose because of its power equal to `92%` that of `H_(2)`

B

b.With `O_(2)` it is used for by deep sea divers for respiration and also used in the treatment of respiratory diseases like asthma.

C

c.Providing inert atmosphere in the welding of metals or alloys that are easily oxidised

D

Used the inflating the type of big aeroplanes because lightness.

Text Solution

Verified by Experts

The correct Answer is:
c
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