'Yellow Revolution' is associated with the production of
The supersonic aircraft find it most convenient to fly in the
A degree of Longitude has about the same length as a degree of Latitude at:
The marshy and forested land in Uttar Pradesh is :
India is called a tropical country mainly on account of its:
കേരളത്തിൽ പശ്ചിമഘട്ടത്തിന്റെ ശരാശരി ഉയരം എത്ര ?