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 20 of 26.
Archangel Micheal said:
8 years ago
For me, the correct answer is hydrogen sulfide because as far as I know it is acidic and poisonous.
MADEIA said:
7 years ago
Option B is correct. I agree with the given answer.
Adarsh said:
7 years ago
I think the correct answer is A.
Priscilla said:
7 years ago
I think option A is the right answer.
Akolade Alabi said:
7 years ago
It's B because there have been chemical reactions towards the two objects which makes it a mixture.
Krishan said:
7 years ago
I think it is option B because they have been reactive with each other.
SUBHANKAR said:
7 years ago
Option B is correct. I agree.
Daraksha said:
7 years ago
Please give me a correct answer with explanation.
Priya said:
7 years ago
I think the right answer is option B. I agree with the given answer.
Ravi said:
7 years ago
Hydrogen sulphide is a heavy gas, it has property to react with metals like copper, bronze, steel etc. At some conditions (temperature, moisture) brass is a metal (alloy) made of copper and zinc. These two metals are mixed in different proportions. Copper reacts with hydrogen sulphide which makes it corrosive.
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