2611: The January isotherm taken as a basis for dividing India into tropical and sub-tropical zones is

(a) 21°C

(b) 18°C

(c) 12°C

(d) 15°C
2612: The Lahore Session of the Indian National Congress (1929) is very important in history, because

1. the Congress passed a resolution demanding complete independence

2. the rift between the extremists and moderates was resolved in that Session

3. a resolution was passed rejecting the two-nation theory in that Session

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 and 3
(c) 1 and 3
(d) None of the above
2613: Permanent hardness of water cannot be removed by:

(a) Boiling

(b) Adding caustic soda

(c) Distillation

(d) Adding soda
2614: In India, among the following locations, the Dutch established their earliest factory at

(a) Surat

(b) Pulicat

(c) Cochin

(d) Cassimbazar
2615: Match rivers labelled A, B, C and D on the given map with their names given in the list and select the correct answer using the codes given below the list:

List I
1. St. Lawrence
2. Orinoco
3. Mackenzie
4. Amazon
5. Yukon


Codes:
(a) A-4, B-3, C-2, D-1
(b) A-5, B-3, C-1, D-2
(c) A-5, B-4, C-1, D-3
(d) A-3, B-1, C-4, D-2