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 14 of 26.
Shreya acharjya said:
9 years ago
But why can't it be nitrogen?
MccoRonnie DeLonte said:
9 years ago
I can't understand, I think it's either A or B, I'm not sure about my answer.
Valerie said:
9 years ago
I actually think its A because oxygen usually causes things to rust l8k at the places with a lot of oxygen in the atmosphere.
Dev said:
9 years ago
Because all other options are gas only.
Dev said:
9 years ago
Because Hydrogen Sulphide is an acid. As because of acid it reacts with brass and discolored the brass.
Ismail said:
9 years ago
Its because of the reaction between brass and hydrogen sulphyde. It will be discolour the brass.
Ismail said:
9 years ago
Oxygen can also do this process, but in slowly and in low quantity.
Sch chowdary said:
9 years ago
@Ismail.
You are right because hydrogen also mixed oxygen and carbon dioxide so hydrogen peroxide.
You are right because hydrogen also mixed oxygen and carbon dioxide so hydrogen peroxide.
Nityanand bharti said:
9 years ago
Because hydrogen sulphaide is an acid.
Patrick said:
9 years ago
Hydro sulphide is a colourless gas when mixed with others.
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