In which year, RBI was nationalized?

Psidium guajava is the scientific name of ___________.

Who is the author of "India 2020: A Vision for the New Millennium"?

Whose ear Mike Tyson bite in professional boxing match in 1997 for the WBA Heavyweight Championship?

The Westminster parliamentary system was developed in ___________.

Under which Article is the Union Public Service Commission of India established?

Farad is unit of ___________.

Instrument for measuring blueness of the sky or ocean is called ___________.