9. Exercises IX

Answer the following question:

 

 

  

She can find the nature of the gas by using wet litmus paperred litmus paperpink litmus paperdry litmus paper. After bringing the litmus paper in contact with the gas, it is acidic if it turns the blue litmus paper into the greenbrownredblue. Similarly, it is basic to turn the red litmus into the greenredbrownblue.

  

(i). Carbon + Oxygen → Carbon dioxideNitrogen + Oxygen → Nitrogen dioxideHydrogen + Oxygen → Hydrogen peroxideCarbon + Oxygen → Carbon monoxide.

 

(ii). Carbon dioxide + Lime → Milky water Carbon dioxide + Lime water → MilkyCarbon monoxide + Lime water → MilkyCarbon dioxide + Lime water → Lime.