4446: After sowing seeds, the fertilisers used are:
(a) Phosphates
(b) Nitrates
(c) Green manures
(d) All of these
4447: Each of the 3 persons is to be given some identical items such that product of the numbers of items received by each of the three persons is equal to 30. In how many maximum different ways can this distribution be done ?
(A) 27
(B) 24
(C) 33
(D) 21
4448: Which soil is best suited for paddy crop?
(a) Black soil
(b) Loamy soil
(c) Hard soil
(d) Red soil
4449: Biodiversity forms the basis for human existence in the following ways:
1. Soil formation
2. Prevention of soil erosion
3. Recycling of waste
4. Pollination of crops
Select the correct answer using the codes given below:
(a) 1, 2 and 3 only
(b) 2, 3 and 4 only
(c) 1 and 4 only
(d) 1, 2, 3 and 4
4450: First Five-Year Plan laid stress on:
(a) Agriculture
(b) Industry
(c) Power
(d) Uplifting of poor people