Chemistry
Assertion (A): Carbon monoxide is an extremely poisonous gas.
Reason (R): The gas is formed due to incomplete combustion of carbon.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true but R is not the correct explanation of A.
Explanation — A is true as carbon monoxide is an extremely poisonous gas because carbon monoxide combines with the haemoglobin present in the red blood cells of our body to form a stable compound called carboxyhaemoglobin.
R is true as this stable compound does not allow haemoglobin to absorb or carry oxygen, thus depriving our body cells of oxygen. This causes paralysis of the respiratory organs and results in death due to suffocation (asphyxiation).
Therefore, Both A and R are true but R is not the correct explanation of A is the correct option.
Related Questions
Assertion (A): Pencil leads are made up of graphite.
Reason (R): Graphite leaves a black mark on paper.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Carbon dioxide is used in fire extinguishers.
Reason (R): CO2 gas is a non supporter of combustion, which cuts off the supply of oxygen to fire.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
How is carbon monoxide gas formed? Give a balanced equation for the reaction.
Give two uses of carbon monoxide.