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 1 of 26.
Tejas said:
2 months ago
Yes, Thanks all for explaining it.
GODFRED ADUSEI said:
3 months ago
I also think option B is the correct answer.
Ananya Kumari said:
6 months ago
Brass gets discoloured in the air primarily due to the presence of hydrogen sulfide (H₂S).
When hydrogen sulfide reacts with the copper in brass, it forms copper sulfide, which appears as a dark tarnish or discolouration on the surface of the brass.
When hydrogen sulfide reacts with the copper in brass, it forms copper sulfide, which appears as a dark tarnish or discolouration on the surface of the brass.
(4)
Maggy said:
9 months ago
Agree, Option B is the correct answer.
(7)
Saloni kumari said:
10 months ago
I think option B is right.
(1)
Anbarasan said:
1 year ago
How? Please explain.
(5)
Rohini said:
1 year ago
This is because the presence of a mixture of hydrogen and sulphide and brass, which has a very light colour and mixture with hydrogen sulphide leads to non-temperature (hot and cold temperature type). So it becomes discoloured. Hence, brass gets discoloured in the air because of the presence of hydrogen sulphide.
(16)
Mudasir said:
2 years ago
Brass gets discolored due to H2S present in the air.
Brass is made of zinc and copper and copper sulfite and zinc sulfide are colored.
Brass reacts with Oxygen and causes corrosion. But corrosion takes years to discolor.
Brass is made of zinc and copper and copper sulfite and zinc sulfide are colored.
Brass reacts with Oxygen and causes corrosion. But corrosion takes years to discolor.
(15)
Bhavika jangid said:
2 years ago
I'm not getting How option B is correct.
Please explain to me.
Please explain to me.
(14)
Vishesh said:
2 years ago
According to me, option B is incorrect because they have asked for gas.
(12)
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