science
Grade-5
Easy

Question

Which of these contains only one type of atom?

  1. Water
  2. Hydrogen
  3. Carbon dioxide
  4. Methane 

hintHint:

Formula of :-
  • Methane is CH4
  • Water is H2O
  • Hydrogen is H2
  • Carbon Dioxide is CO2

The correct answer is: Hydrogen


    Hydrogen (H2) is made up of only one element i.e. hydrogen atoms

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