For the following questions answer them individually
Orbital period of Halley's comet is ....... years.
The first trial run of Delhi Metro rail was done on:
Who is the Finance Minister of India as of 31 August 2018?
Vasco-Da-Gama becamethe first European to set footin India via the sea in
Who among the following has received the Rajiv Gandhi award for Journalism, 2008 ?