Question

Which gas is lung irritating that leads to an acute respiratory disease in children?
A.\[{\text{N}}{{\text{O}}_2}\]
B.\[{\text{NO}}\]
C.\[{\text{C}}{{\text{O}}_2}\]
D.\[{\text{S}}{{\text{O}}_2}\]

Answer 1

Hint:The gas which causes respiratory problems in children or lung irritation is one of the oxides of nitrogen. It is a binary compound and is used in the production of fertilizers.

Complete step by step solution:
Let us look at the health hazards that each gas have:
\[{\text{N}}{{\text{O}}_2}\] is known as nitrogen dioxide. It is one among the oxide family of nitrogen. It turns reddish brown at higher temperature due to being in equilibrium with its dimer state. It has the ability to change the functioning of lungs. It causes inflammation or irritation in lungs. Prolonged exposure can cause disturbances in the respiratory system of healthy persons. The increased risk is among the people having Asthma or any other respiratory disease.
\[{\text{NO}}\] is also known as nitric oxide. It is a colourless gas. It is one of the important oxides of nitrogen. It exists in free radicals. It does not seem to have any serious health hazards however there has been a limit set for exposure to \[{\text{NO}}\].
\[{\text{C}}{{\text{O}}_2}\] is known as carbon dioxide and is well known to us. It is a very important gas for the functioning of the respiratory system. It is also beneficial for many biological processes related to bacteria and microorganisms.
\[{\text{S}}{{\text{O}}_2}\] is known as sulphur dioxide. It is a toxic gas and can cause problems at high concentration. The symptoms are usually seen with the persons already having some disease.

Thus, the correct option is A.
Note:
Apart from the health hazards, nitrogen dioxide also becomes the cause of acid rain after dissolution in water. The toxicity of nitrogen dioxide can be reduced by using proper ventilation near gas stoves. If ventilation is not available then electrical stoves can be a better option.