  Possible symmetry breaking tests with respect to the time inversion in the
elastic scattering of neutrinos on polarized electrons are considered, assuming
that the incoming neutrino beam is either longitudinally or transversely
polarized, and both momentum and polarization of recoil electrons are observed.
In the process, in addition to the standard interaction, the exotic scalar,
pseudoscalar and tensor interactions can participate. Due to the nonstandard
interactions, different types of triple products in the cross section may
appear. We consider several experiments in which mixed products built of the
recoil electron polarization and two other vector quantities (incoming neutrino
momentum, its polarization, polarization of the electron target and outgoing
electron momentum) can be identified. The observation of these effects would
unambiguously indicate noninvariance under time reversal and the presence of
exotic interactions.
