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31 . Study of butterfly is-
A. Ichthyology B. Neonafology
C. Lapidopterology D. Polynalogy

32 . Study of system of animal body which protect it from infection of various desease is called-
A. Hemology B. Immunology
C. Microbiology D. Pathology

33 . Ornithology is the study of-
A. Mammal B. Birds
C. Fishes D. Bat

34 . The ore of Aluminium is-
A. Bauxite B. Chromium
C. Mica D. Manganese

35 . Which one of the following is known as "Brown Coal"?
A. Bituminous B. Anthracite
C. Peat D. Lignite