science
Grade-5
Easy

Question

CO2 is denoted for

  1. Oxygen 
  2. Carbon dioxide 
  3. Calcium 
  4. Carbon 

hintHint:

C O subscript 2 is denoted by carbon dioxide.

The correct answer is: Carbon dioxide


    C symbol represents carbon, and 2 O represents 2 oxygen molecules so C O subscript 2 represents carbon dioxide.

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