136: When one enters a dark room, he is not able to see anything but after some time his vision improves. This is because:

(a) The retina of the eye comes forward

(b) The retina of the eye moves backward

(c) The pupil of the eye contracts

(d) The pupil of the eye dilates
137: Who of the following founded a new city on the south bank of a tributary to river Krishna and undertook to rule his new kingdom as the agent of a deity to whom all the land south of the river Krishna was supposed to belong?

(a) Amoghavarsha I
(b) Ballala II
(c) Harihara I
(d) Prataparudra II
138: Consider the following :

I. Saxena, David. Jain and Kumar were District Collectors at places P, Q, R and S respectively in 1970.
II. In 1972 they were transferred. Saxena and Jain interchanged places. Kumar and David also interchanged places.
III. One year later in 1973 they were again transferred such that David and Jain interchanged places and Saxena and Kumar were also interchanged.

What should be the next round of transfers so that all the four persons could have been posted at all the four places ?

(a) Interchange Saxena and David as well as Jain and Kumar
(b) Interchange Saxena and Kumar as well as David and Jain
(c) Interchange David and Kumar as well as Saxena and Jain
(d) It is not possible for all the four persons to have been posted at all the four places
139: Which one of the Chola kings conquered Ceylon ?

(a) Aditya I

(b) Rajaraja I

(c) Rajendra

(d) Vijayalaya
140: Consider the following statements:

1. Ocean currents are the slow-surface movement of water in the ocean.

2. Ocean currents assist in maintaining the Earth's heat balance.

3. Ocean currents are set in motion primarily by prevailing winds.

4. Ocean currents are affected by the configuration of the ocean.

Which of these statements are correct?

(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2, 3 and 4