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 8 of 26.
Renuka said:
1 decade ago
Cu present in brass reacts with h2s & undergo corrosion i.e. Its get oxidised hence ultimately get discolourised.
Sravya said:
1 decade ago
I think the acidity of Hydrogen Sulphide is more than the oxygen. Because of that Brass can be easily discolored.
Dinesh said:
1 decade ago
Hydrogen sulphide can corrode metals such as iron, copper, brass. That discolour copper & brass utensils.
Shashwat rawat said:
1 decade ago
Zinc which is present in brass reacts with hydrogen sulphide to form zinc sulphide which is black in colour.
Balwinder said:
1 decade ago
Any metal gets discolor due to its oxidation. Brass gets discolored in air due to the presence of Oxygen.
Hardik said:
1 decade ago
This process due to oxydation.
That's why I think answer is oxigen and oxigen must be present in process.
That's why I think answer is oxigen and oxigen must be present in process.
Sawmiya said:
1 decade ago
Answer B is correct because brass is a material (Cu+Zn=brass) H2SO4 is acid so the brass is discoloured.
Dev said:
9 years ago
Because Hydrogen Sulphide is an acid. As because of acid it reacts with brass and discolored the brass.
Dipali dhakoliya said:
1 decade ago
In brass the aluminium is present which is less reactive then hydrogen sulfide and it lose the colour.
Hina shafiq said:
9 years ago
Yeah, option "b" is correct because brass is a metal and hydrogen sulphide reacts rapidly with metal.
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