Explanation:
natural fibre, any hairlike raw material directly obtainable from an animal, vegetable, or mineral source and convertible into nonwoven fabrics such as felt or paper or, after spinning into yarns, into woven cloth. ... Most textile fibres are slender, flexible, and relatively strong.
Answer:
Standard cell potential is 0.56V
Explanation:
Standard reduction potential (
) are given below-


As
is greater than
therefore Fe will be oxidized to
and
will be reduced to Cu
Oxidation: 
Reduction: 
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Overall: 
Standard cell potential, 
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