Multiple choice

What is the correct increasing order of abundance of the main components of air?

  1. Oxygen, nitrogen and argon

  2. Argon, oxygen and nitrogen

  3. Nitrogen, argon and oxygen

  4. Nitrogen, oxygen and argon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The question asks for INCREASING order (least to most). Argon (~0.93%) is least abundant, then oxygen (~21%), then nitrogen (~78%). So argon < oxygen < nitrogen is correct. Option B states 'argon, oxygen and nitrogen' which matches this increasing order.

Keep practicing — related questions