General Knowledge - General Science - Discussion

Discussion Forum : General Science - Elements and Metals (Q.No. 1)
Brass gets discoloured in air because of the presence of which of the following gases in air?
Hydrogen sulphide
Carbon dioxide
Answer: Option
No answer description is available. Let's discuss.
248 comments Page 1 of 25.

Rohini said:   2 months 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.

Mudasir said:   4 months 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.

Bhavika jangid said:   5 months ago
I'm not getting How option B is correct.

Please explain to me.

Vishesh said:   6 months ago
According to me, option B is incorrect because they have asked for gas.

Swathi said:   6 months ago
Yes, Agree option B is the correct answer.

Shristy said:   8 months ago
Thanks all for explaining explaining the answer.

Priya said:   10 months ago
B is the correct answer.

Anjali mishra said:   10 months ago
Option B is the correct answer.

Gopal said:   1 year ago
Yes, B is right. I agree.

Chilu said:   1 year ago
Thanks all for discussing it in detail for good understanding.

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