Brass gets fade colour in air due to the presence of: A) Oxygen B) Hydrogen Sulphide C) Carbon Dioxide D) Nitrogen
Option B) This is because the presence of a mixture of hydrogen and sulphide and brass, which has a very light color and mixture with hydrogen sulphide leads to non-temperature (hot and cold temperature type) so it becomes discolored. Hence, brass gets discolored in air because of the presence of hydrogen sulphide.
