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 4 of 26.
Anushadevi said:
1 decade ago
Because of the presence of hydrogen sulphide in Brass,it combines with oxygen in air and form water,evaporates.So remained sulphide is colourless in air .So Brass gets discoloured in the air.
Dinesh said:
1 decade ago
Hydrogen sulphide can corrode metals such as iron, copper, brass. That discolour copper & brass utensils.
Sanjay said:
1 decade ago
I think answer is "a' because it will form oxides with metals.
Karthik said:
1 decade ago
Hydrogen sulphide-Hs+br->hbr+s.
So it become discolour.
So it become discolour.
Sahana said:
1 decade ago
How its possible air doesn't have hydrogen sulphide?
Manuangel said:
1 decade ago
Why we choose hydrogen sulphide. You mean hydrogen can do any material to decolourize?
Abcdef said:
1 decade ago
How we can learn to balace reactions for class 8th?
Rani said:
1 decade ago
Brass is a alloy so it can decolourise easily with hydrogen sulphide.
Prani said:
1 decade ago
Brass is an alloy of Cu and Zn, when it comes in contact with H2S it forms zns and Cu2s which are black in colour hence brass gets discolured.
Ankit said:
1 decade ago
Brass is a alloy of Cu and Zn so it can decolourise easily with hydrogen sulphide.
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