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 10 of 26.
Stylish said:
1 decade ago
Zinc and copper (mostly copper) oxidizes in air to form white zinc oxide and red copper oxide.
Maimuna said:
9 years ago
Please someone clearly explain the mechanism behind this process, it's very confusing for me.
RAMYARAMARAJ said:
1 decade ago
It is react with the atomsphere air,then it become colourless due to the effect of sulphide.
(1)
Nidhi said:
1 decade ago
I think because other options are less reactive than H2s, and it reacts to give that colour.
Karamvir said:
1 decade ago
Brass react with hydrogen sulphide results hot and cold condition so it becomes colourless.
Apoorva said:
1 decade ago
I think as brass has got zinc in it and it rapidly reacts with zinc and gets discolored.
Purvi said:
1 decade ago
Its a hydrogen sulphide which discolours the brass which is a composition of cu and zn.
Shafici said:
10 years ago
We can not choose because it can do it.
So can you do something which you can't do it.
So can you do something which you can't do it.
Pravesh sharma said:
1 decade ago
I think that option a is correct because O2 can react with brass and can discolored it
Manuangel said:
1 decade ago
Why we choose hydrogen sulphide. You mean hydrogen can do any material to decolourize?
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