  We determine several quantities in quenched lattice QCD with exact chiral
symmetry. For 100 gauge configurations generated with Wilson gauge action at $
\beta = 6.0 $ on the $ 16^3 \times 32 $ lattice, we compute quenched quark
propagators for 13 bare quark masses. The pion decay constant is extracted from
the pion propagator, and from which the inverse lattice spacing is determined
to be $ a^{-1} = 1.979(6) $ GeV. The parameters ($ C, \delta, B $) in the
pseudoscalar meson mass formula in quenched chiral perturbation theory
(q$\chi$PT) to one-loop order are determined. Further, we measure the index
(topological) susceptibility of these 100 gauge configurations, $ \chi_t = (175
\pm 6 {MeV})^4 $, from which we obtain an estimate of the mass of $ \eta' $ in
q$\chi$PT, and the coefficient of quenched chiral logarithm, both in good
agreement with the values determined from the pion masses, as well as with the
theoretical estimates. With our values of $ C, \delta, B $, the experimental
inputs of pion and kaon masses, and the pion decay constant, we determine the
light quark masses: $ m_{u,d} = 4.1 \pm 0.3 $ MeV, and $ m_s = 92 \pm 9 $ MeV,
in the $ \bar{MS} $ scheme at scale $ \mu = 2 $ GeV. Also, we determine the
quark condensate $<\bar q q > = -(250 \pm 3 {MeV})^3 $, and the quark-gluon
condensate $ g < \bar q \sigma_{\mu\nu} F_{\mu\nu} q > = -(434 \pm 4 {MeV})^5
$, in the $ \bar{MS} $ scheme at scale 2 GeV.
