Question

why do you think presence of
anhydrous calcium Chloride Prevents rusting?​

Answer 1

Answer:

Anhydrous calcium chloride acts as a desiccant, removing moisture from the air and preventing the middle nail from rusting. Boiling water (right) removes some of the oxygen meaning that this nail does rust but does so much slower than the left tube.

Answer 2

Answer:

Anhydrous calcium chloride is used in the test in which we try to show that only air alone cannot create rust in iron. Anhydrous calcium chloride is a drying agent so it absorb moisture.