396: Retina in the eyes acts as a ........ in the camera.
(a) Lens
(b) Shutter
(c) Film
(d) None of these
397: Assertion (A):
Marathas emerged as the strongest native power in India after the decline of Mughal empire.
Reason (R):
Marathas were the first to have clear concept of a united Indian nation.
(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 the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
398: The song "Amar Sonar Bangla" written during the Swadeshi Movement of India inspired the liberation struggle of Bangladesh. Who wrote this song ?
(a) Rabindranath Tagore
(b) Mukunda Das
(c) Dwijendralal Ray
(d) Rajni Kanta Sen
399: Terrace cultivation is practised mostly
(a) In urban areas
(b) On slopes of mountains
(c) On tops of hills
(d) In undulating tracts
400: For which one of the following snakes is the diet mainly composed of other snakes?
(a) Rattlesnake
(b) King cobra
(c) Krait
(d) Russell's viper