1611: Sun's halo is produced by the refraction of light in

(a) Water vapour, in Stratus clouds

(b) Ice crystals in Cirro-Cumulus clouds

(c) Ice crystals in Cirrus clouds

(d) Dust particles in Stratus clouds
1612: Match List I with List II and select the correct answer using the codes given below the lists :

List I-------------List II

I. 1556----------(A) Battle of Haldi Ghati

II. 1600---------(B) Nadir Shah's capture of Delhi

III. 1686--------(C) Death of Shivaji

IV. 1739--------(D) Grant of Charter to East India Company

------(E) Accession of Akbar

Codes:

(a) I-C, II-D, III-B, IV-A
(b) I-E, II-D, III-C, IV-B
(c) I-E, II-B, III-A, IV-D
(d) I-A, II-E, III-C, IV-B
1613: Which one of the following countries is not a member of the Commonwealth of Independence States (CIS) ?

(a) Estonia
(b) Armenia
(c) Georgia
(d) Belarus
1614: Which one of the following is not essentially a species of the Himalayan vegetation ?

(a) Juniper

(b) Silver fir

(c) Mahogany

(d) Spruce
1615: There are mice in the field which act as prey to snakes. Hawks eat the snakes. Some dogs are brought into the field ? What will be its effect?

(a) Mice will decrease

(b) Hawks will decrease

(c) Snakes will increase

(d) Mice and snakes will decrease