d) Four nails are added to four test tubes A, B, C, D as shown.
А
Boiled water
+ oil layer
B
Salt water
C с
Moist air
Dry air
(1) Identify the test tube with the nail that would rust the least? Why?
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Answer:
SLT WATER
Explanation:
IN SALTED SOLUTION THE NAIL WOULD RUST LEST
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