Question

Distinguish between the first class miles and second class miles mention any three steps taken to speed up collection and delivery of miles

Answer 1

cards and envelopes are first class mails and can be airlifted b/w stations covering both land and water.
2 class mail includes book packets ,newspapers etc they are carried by surface mails covering land and water transport.
three steps taken to speed up collection and delivery of mails are six mail channels introduced.
rajdhani channel metro channel and bulk mail channel etc