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Solution


Q.

Carbon exists in the atmosphere in the form of:
1 carbon monoxide only  
2 carbon monoxide in traces and carbon dioxide  
3 carbon dioxide only  
4 coal  

Ans.

(3)

Carbon exists in the atmosphere in the form of carbon dioxide gas (CO2) in air (Only 0.03%) and in the earth crust it exists in the form of the minerals like carbonates. It also occurs in the form of fossil fuels, organic compounds, wood, cotton and wool, etc.