41. In the production of crude copper in the country, Bihar ranks -
42. After independence the irrigated area in Bihar enlarged approximately -
43. The number of Indian states touching the boundary of Bihar is -
44. Iron ore is found in Jharkhand in the district -
45. Palamau (Ranchi) is famous for which mineral?
46. In the production of the following in India, Bihar has monopoly in -
47. Which of the following districts of Bihar transferred some of its areas to West Bengal?
48. Piedmont Swamp Soil is found only in which one of the following districts of Bihar?
49. Standard time of Patna is -
50. What percentage of the total mineral production in thecountry is found in Bihar?
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