2421: The major ingredient of leather is:
(a) Collagen
(b) Polymer
(c) Carbohydrate
(d) Nucleic acid
2422: Assertion : (A)
Though India's national income has gone up several fold since 1947, there has been no marked improvement in the per capita income level.
Reason : (R)
Sizeable proportion of the population of India is still living below the poverty line.
In the context of the above two statements which one of the following is correct ?
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
2423: Which one of the following is the correct sequence of the states (labelled 1, 2, 3 and 4) of India shown on the map in descending order in terms of their available ground water resources for irrigation ?
(a) 3, 4, 1, 2
(b) 3, 4, 2, 1
(c) 4, 3, 1, 2
(d) 4, 3, 2, 1
2424: Which one of the following dynasties was ruling over North India at the time of Alexander's invasion ?
(a) Nanda
(b) Maurya
(c) Sunga
(d) Kanva
2425: What are the significances of apractical approach to sugarcane production known as Sustainable Sugarcane Initiative ?
1. Seed cost is very low in this compared to the conventional method of cultivation.
2. Drip irrigation can be practiced very effectively in this.
3. There is no application of chemical/inorganic fertilizers at all in this.
4. The scope for intercropping is more in this compared to the conventional method of cultivation.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 1, 2 and 4 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4