Q. On which principle the newly launched ‘Grahak Sadak Koyla Vitaran App’ of Coal India will allow users to monitor the despatches of coal?

Answer of this question "On which principle the newly launched ‘Grahak Sadak Koyla Vitaran App’ of Coal India will allow users to monitor the despatches of coal?", here are 4 choices for this question : First Come, First Take, First In First Out, First In First Take, None of these.
Answer Is "First In First Out".