3921: In medieval India, the designations `Mahattara and `Pattakila were used for
(a) military officers
(b) village headmen
(c) specialists in vedic rituals
(d) chiefs of craft guilds
3922: Assertion (A) :
The surface winds spiral inwards upon the centre of the cyclone.
Reason (R) :
Air descends in the centre of the cyclone.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
3923: On which one of the following rivers is the Tehri Hydropower Complex located?
(a) Mandakini
(b) Bhagirathi
(c) Alaknanda
(d) Dhauliganga
3924: Which one of the following has merged with Tanganyika to form the present Tanzania?
(a) Zimbabwe
(b) Zaire
(c) Zanzibar
(d) Zambia
3925: The ratio of boys and girls in sections A, B, C and D of class VI is respectively 7 : 5, 5 : 3, 3 : 2 and 2 : 1. If the number of students in each of the sections is equal, then maximum number of boys are en rolled in section:
(a) A
(b) B
(c) C
(d) D