Question:medium
The gases respectively absorbed by alkaline
pyrogallol and oil of cinnamon are
The gases respectively absorbed by alkaline
pyrogallol and oil of cinnamon are
Updated On: Jun 12, 2026
- $O_3 , CH_4$
- $O_2 , O_3$
- $SO_2 , CH_4$
- $N_2O , O_3$
Show Solution
The Correct Option is B
Solution and Explanation
The question asks about the gases absorbed by alkaline pyrogallol and oil of cinnamon. Let's examine each component:
- Alkaline Pyrogallol:
- Alkaline pyrogallol is a chemical reagent used to absorb oxygen (O_2) from a gas mixture.
- This property is commonly utilized in laboratory practices to determine the presence of oxygen in a sample.
- Oil of Cinnamon:
- Oil of cinnamon can absorb ozone (O_3).
- It has specific applications due to its ability to selectively absorb ozone, which is used in testing and analytical contexts.
Given this information, we can conclude that:
- Alkaline pyrogallol absorbs O_2 (Oxygen).
- Oil of cinnamon absorbs O_3 (Ozone).
Therefore, the correct answer to the question is the pair of gases absorbed by these reagents:
Correct Answer: O_2 , O_3
Explanation of Incorrect Options:
- O_3 , CH_4: Methane (CH_4) is not absorbed by either of these substances, and ozone is only absorbed by oil of cinnamon.
- SO_2 , CH_4: Neither sulfur dioxide (SO_2) nor methane (CH_4) is absorbed by either reagent.
- N_2O , O_3: Nitrous oxide (N_2O) is not absorbed by these substances; only ozone is absorbed by oil of cinnamon.
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