<prompt> Serum sickness is which type of reaction?Type-1 hypersensitivityType -2 hypersensitivityType -3 hypersensitivityType -4 hypersensitivity  <response>: Ans. is c i.e., Type -3 hypersensitivity Type ni IgG IgM. complement and leucocyte mediatedo Local-Arthus reactiono Systemic-serum sicknesso Schick testo Polyarteritis nodosa PANo Rheumatoid arthritisoSLEo Acute viral hepatitiso Penicillamine toxicityo Hyperacute graft rejectiono Type 2 lepra reaction ENLo Hypersensitivity pneumonitiso R.Ao Infective endocarditiso Henoch schonlein purpurao Glomerulonephritis 