Brass gets discoloured in air because of the presence of which of the following gases in air?
A. Oxygen
B. Hydrogen sulphide
C. Carbon dioxide
D. Nitrogen
function myFunction()
{
alert("B.Hydrogen sulphide!");
}
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Sunday, October 27, 2013
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shailendr kujmar gupta
function myFunction()
{
alert("sahucafe!");
}
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