General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 1)
1.
Brass gets discoloured in air because of the presence of which of the following gases in air?
Discussion:
254 comments Page 7 of 26.
Ananya thakur said:
1 decade ago
I am very intrested in science but I don't understand anything but I think option B is correct.
Stylish said:
1 decade ago
Zinc and copper (mostly copper) oxidizes in air to form white zinc oxide and red copper oxide.
Supreem said:
1 decade ago
Why brass discolored in the presence of hydrogen sulphide?
Please describe this?
Please describe this?
Chandan kumar said:
1 decade ago
It gets discolored in air because of presence of Hydrogen sulphide in the air Brass constitute zinc and copper and these two elements are Hydro sulphide is a colourless gas and if mixed with others, will get colourless.
Poonam said:
1 decade ago
Because brass is metal it get react with sulphide.
Karamvir said:
1 decade ago
Brass react with hydrogen sulphide results hot and cold condition so it becomes colourless.
Nidhi said:
1 decade ago
I think because other options are less reactive than H2s, and it reacts to give that colour.
Sra1 said:
1 decade ago
Oxygen is correct because it easily reacts with corban compounds due to that it changes its colour.
Nag3 said:
1 decade ago
It is H2 sulfide because brass contain them since it is an alloy made of it and tin.
Abhigna said:
1 decade ago
I think it will not discolour. It may become black in colour, because of the presence of CU and Zn. If it react with H2S it forms CuS AND ZnS.
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