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A colourless gas with smell of rotten fi...

A colourless gas with smell of rotten fish is

A

`H_2S`

B

`PH_3`

C

`SO_2`

D

None of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question "A colourless gas with the smell of rotten fish is", we will analyze the given options step by step. ### Step 1: Identify the characteristics of the gases - **H₂S (Hydrogen Sulfide)**: This is a colorless gas known for its characteristic smell of rotten eggs, not fish. - **PH₃ (Phosphine)**: This is a colorless gas that has a smell similar to rotten fish. - **SO₂ (Sulfur Dioxide)**: This is a colorless gas with a pungent, suffocating odor, but it does not smell like rotten fish. - **None of these**: This option suggests that none of the gases listed fit the description. ### Step 2: Analyze the options From the analysis: - H₂S does not match the description. - SO₂ does not match the description. - "None of these" is not applicable since we have a matching option. - PH₃ matches the description as it is a colorless gas with the smell of rotten fish. ### Step 3: Conclusion Based on the analysis, the correct answer is **PH₃ (Phosphine)**. ### Final Answer The colorless gas with the smell of rotten fish is **PH₃ (Phosphine)**. ---
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