जॉइन Examsbookउत्तर : 1. "Hydrogen sulphide"
Brass gets discoloured in air because of the presence of which of the following gases in air ?5
प्र: Brass gets discoloured in air because of the presence of which of the following gases in air ?
- 1Hydrogen sulphidetrue
- 2Oxygenfalse
- 3Nitrogenfalse
- 4Carbon dioxidefalse
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उत्तर : 1. "Hydrogen sulphide"
व्याख्या :
Answer: A) Hydrogen sulphide Explanation: