Chemistry · PYQ NEET UG 2023

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R : \n Assertion A : Helium is used to dilute oxygen in diving apparatus.\nReasons R : Helium has high solubility in \( \text{O}_2 \).\nIn the light of the above statements, choose the correct answer from the options given below :

1. Both A and R are true and R is the correct explanation of A.
2. A is true but R is false.
3. Both A and R are true and R is NOT the correct explanation of A.
4. A is false but R is true.