20. Read the following and answer any four questions:
In the electrolytic refining of copper. The electrolyte is a solution of acidified copper sulphate. There are an anode and cathode. Refining is carried out by passing an electric
current.
Cathode
Anode
wcu
Cul
Arlind copper sulphate solution
Tunk
Impurities Lat we do
L The anode is
a. pure strips
b. Impure copper
c. refined copper
d. none of these
il. Anode mud consists of:
a. insoluble impurities
b. soluble impurities
C. pure metal
d. impure metal
ill. Which of the following are refined electrolytically: (A) Au, (B) Cu, (C) Zn, (D) K
a. A and B
b. B and C
C. A, B and C
d. B, C and D
iv. On passing, electric current Cu is deposited on:
a. cathode
b. anode
c. bottom of cathode
d. bottom of anode
v. Which one of the following four metal would be displaced from the solution of its sa
by the other three metal?
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Answer:
Such a long question .do yourselves
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