  We study magneto-transport properties in single crystals of TaSb_2, which is
a recently discovered topological semimetal. In the presence of magnetic field,
the electrical resistivity shows onset of insulating behaviour followed by
plateau at low temperature. Such resistivity plateau is generally assigned to
topological surface states. TaSb2 exhibits extremely high magneto-resistance
with non-saturating field dependence. We find that aspects of extremely large
magneto resistance and resistivity plateau are well accounted by classical
Kohler scaling. Unambiguous evidence for anomalous Chiral transport is provided
with observation of negative longitudinal magneto-resistance. Shubnikov-de Haas
oscillations reveal two dominating frequencies, 201 T and 455 T. These aspects
categorize TaSb2 as a Type-II Weyl semimetal. At low temperature, the field
dependence of Hall resistivity shows non-linear behaviour that indicates the
presence of two types of charge carriers in consonance with reported electronic
band structure. Analysis of Hall resistivity imply very high electron
mobilities.
