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Arnav Ranka
from
Gyan Bharati School, Saket, New Delhi
Subject :
NSO
Class :
Class 8
To protect iron from corrosion and rust, it is coated with
A
Tin
B
Copper
C
Mercury
D
Zinc.
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Ans 1:
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Zinc
Siya Aneja
from
Tagore International , SOUTH DELHI
Class :
Class 8
Zinc
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