When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called
In each of the questions, four alternatives are given for the Idiom/Phrase. Choose the alternative which best expresses the meaning of the Idiom/Phrase and click the button corresponding to it.
In April 2017, Agriculture Ministry Unveiled Model APMC Act. This is to give more freedom to sell their produce. What does ‘M’ stand for in ‘APMC’ act?