mrkjossy mrkjossy

15-02-2019
Biology

contestada

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

Respuesta :

milianijolie milianijolie

15-02-2019

B. Hydrogen sulphide

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