Dynamic Practice Questions Bank. 

1)     Study the given figure:

And answer the following questions.

Why is the gas not collected by downward displacement of water?  

- The gas not collected by downward displacement of water because carbon dioxide gas reacts with water to form carbonic acid.

What happens when this gas is heated with red-coke at about 900° ? Write with equation.

- When carbon dioxide reacts with red coke at 900 degrees Celsius, carbon dioxide is reduced to carbon monoxide, and elemental carbon is produced as a result of the reaction.

     Equation :     C + CO₂→2CO  

Write one use of carbogen

- Carbogen may be used in animal research to modulate oxygen levels during experiments.