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During the Practical Session in the Lab When Hydrogen Sulphide Gas Having Offensive Odour is Prepared for Some Test, We Can Smell the Gas Even 50 Metres Away. Explain the Phenomenon. - Chemistry

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During the practical session in the lab when hydrogen sulphide gas having offensive odour is prepared for some test, we can smell the gas even 50 metres away. Explain the phenomenon.

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The phenomenon is diffusion. In air, gas molecules diffuse to mix thoroughly. Hence, we can smell hydrogen sulphide gas from a distance in the laboratory.

Concept: Study of Gas Laws
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Selina Concise Science Chemistry 1 Class 9 ICSE
Chapter 7 Study of Gas Laws
Exercise 7 (A) | Q 3 | Page 125
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