Q.

Given below are two statements: one is labelled as
Assertion A and the other is labelled as Reason R: 

Assertion A : Helium is used to dilute oxygen in diving apparatus.
Reasons R : Helium has high solubility in O2.
In the light of the above statements, choose the correct answer from the options given below:

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a

Both (A) and (R) are true and (R) is the correct explanation of (A) 

b

Both (A) and (R) are true and (R) is not the correct explanation of (A) 

c

(A) is false and  (R) are true

d

 (A) is true and (R) is false 

answer is B.

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Detailed Solution

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Helium is often used as a diluent gas in diving mixtures because it has a low density and does not react with other gases.

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