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

Assertion $A$: Helium is used to dilute oxygen in diving apparatus.

Reason $R:$ Helium has high solubility in $O _2$.

In the light of the above statements, choose the correct answer from the options given below

  • A
    $A$ is false but $R$ is true
  • B
    Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
  • C
    Both $A$ and $R$ are true and $R$ is NOT the correct explanation of $A$
  • $A$ is true but $R$ is false

Answer

Correct option: D.
$A$ is true but $R$ is false
d
Helium is used as diluent for oxygen in modern diving apparatus because of its very low solubility in blood.

Gases diffuses easily with each other.

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