(A) Observe the following diagram showing an experiment to determine the conditions under which a metal 'M'…
(A) Observe the following diagram showing an experiment to determine the conditions under which a metal 'M' corrodes.
List your observations in each of the three cases A, B and C with reason, if the metal 'M' is generally protected against corrosion by the method of galvanisation.
Solution
(A)
A: Metal M will get corroded partly
The part of metal M outside oil will get corroded whereas the part of the metal M inside the oil will not corrode as it cannot react with moist air.
B: Metal M will not undergo corrosion.
It is inside the oil and not exposed to moist air.
C: Metal M will not undergo corrosion as moisture is absent in test tube C.
