Question

VALUE BASED QUESTION
Anita bought silver jewellery along with her friend Rita. Anita advised Rita to make sure that the
jewellery was kept in a sealed box and not exposed to air; but Rita forgot and left it open. After some
months when Rita decided to wear it, she found the jewellery all black. Rita was very upset.
a. Why did the jewellery become black when exposed to air?
b. What is this process called?
c. What were the values shown by Anita?







please answer fast urgent
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Answer 1

Answer:

a)jewellery react with oxygen and form oxide which is black in colour

b) corrosion

c) carelessness....and jewellery is not actually pure silver because silver is not show any reaction with oxygen