Question

What do asthma patients use for respiration?

(a) O2 and H2

(b) O2 and He

(c) O2 and Ar

(d) O2 and Ne

I had been asked this question in an interview for internship.

This interesting question is from P-Block Elements topic in portion P-Block Elements of Chemistry – Class 12

Answer 1

The correct choice is (b) O2 and He

The best I can explain: Helium-Oxygen (80:20 or 70:30) mixture provides a dramatic benefit for asthma patients with severe exacerbations. Helium is about 10% as dense as room air and, consequently, travels more easily down narrowed passages.