1767: With reference to soil conservation, consider the following practices :
1. Crop rotation
2. Sand fences
3. Terracing
4. Wind breaks
Which of the above are considered appropriate methods for soil conservation in India ?
(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4
1768: 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