here are some remaining answers ...........
37.(d) Serum complement is often decreased .
38. (a)Rapidly progressive disease.
39. (b)Haematuria with red blood cell casts .
40. i also dont know?
41. (d)Association with congenital hepatic fibrosis.
42. (d) Ovary.
43. (c)Association with tuberculosis.
44. (a)Acute poststreptococcal glomerulonephritis.
45. (d)Microglia.
46. I also dont know?
47. (b) Parkinson’s disease.
48. .(b) Many senile plaques in the cerebrum.
49. (b)Via arterial route .
50. (b)Acute viral meningitis.
well these i answer i looked from book but still i maight be wrong so please correct me. see u later