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CDS I 2020
Question #471
Chemistry
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Silver articles become black after sometime when exposed to air because
A
silver gets oxidised to silver oxide
B
silver reacts with moist carbon dioxide in the air to form silver carbonate
C
silver reacts with sulphur in the air to form a coating of silver sulphide
D
silver reacts with nitrogen oxides in the air to form silver nitrate
Pick an option above to test your answer
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Subject:
Science & Technology
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Silver articles become black after sometime when exposed to air because | CDS I 2020 Solved PYQ | UPSCGPT