681: Important oilfields of the Brahmaputra Valley include

(a) Digboi and Kilboi
(b) Lunej and Ankhleshwar
(c) Badarpur and Masimpur
(d) Naharkatia and Moran
682: The colour of a star is an indication of its

(a) distance from the sun

(b) luminosity

(c) distance from the earth

(d) temperature
683: In which one among the following categories of protected areas in India are local people not allowed to collect and use the biomass?

(a) Biosphere Reserves

(b) National Parks

(c) Wetlands declared under Ramsar Convention

(d) Wildlife Sanctuaries
684: A cube of side 2 units is placed in a rectangular coordinate system with its centre at the origin. The coordinates of a set of 4 non-adjacent corners is

(a) (1, 1, 1); (-1, -1, -1); (1, -1, -1);

(b) (1, 1, 1); (-1, 1, 1); (1, -1, 1); (1, 1, -1)

(c) (1, 1, 1); (-1, -1, -1); (-1, 1, 1); (1, -1,-1)

(d) (-1, -1, -1); (1, 1, -1);. (-1, 1, 1); (-1, 1, -1)
685: The leader of the Bardoli Satyagraha (1928) was

(a) Sardar Vallabhbhai Patel

(b) Mahatma Gandhi

(c) Vithalbhai J Patel

(d) Mahadev Desai