Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Select the option that does NOT belong to the same category as the others: Ozone, Carbon dioxide, Helium, Oxygen
Ozone
Carbon dioxide
Helium
Oxygen
Helium
Identify the chemical classification: Ozone, Carbon dioxide, and Oxygen are compounds or molecules of a single element (polyatomic), whereas Helium is a Noble Gas (monoatomic).
Identify the chemical classification: Ozone, Carbon dioxide, and Oxygen are compounds or molecules of a single element (polyatomic), whereas Helium is a Noble Gas (monoatomic).
Analyze the chemical nature of each term
Ozone (O3), Carbon dioxide (CO2), and Oxygen (O2) are composed of more than one atom (polyatomic molecules).
Identify the exception
Helium (He) exists as a single atom because it is a Noble Gas (inert gas), making it a monoatomic element.
A: Ozone is a polyatomic molecule containing three oxygen atoms. B: Carbon dioxide is a polyatomic compound containing carbon and oxygen atoms. D: Oxygen exists in nature as a diatomic molecule (O2), which is polyatomic.
C is correct because Helium is the only noble gas and exists as a monoatomic atom, while the others are polyatomic molecules.
In odd-one-out questions involving elements, always check their atomic state (monoatomic vs diatomic) and their chemical family (Noble gases vs Reactive non-metals).
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants