Chemistry
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.
Carbon dioxide
1 Like
Answer
Both A and R are true and R is the correct explanation of A.
Explanation — Carbon dioxide is used in fire extinguishers as CO2 gas cuts off the supply of oxygen to fire, thus helping to extinguish it.
Answered By
3 Likes
Related Questions
Assertion (A): The value of diamond decreases with an increase in the impurities.
Reason (R): Colourless, transparent diamonds are the costliest.
- 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): 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 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.
How is carbon monoxide gas formed? Give a balanced equation for the reaction.