The 100Mo (n, 2n) 99Mo and 96Mo (n,p) 96Nb reactions have been studied relative to the 197Au (n, 2n) 196Au monitor reaction, at the neutron energy of 14.54 MeV, based on an experiment performed using Purnima neutron generator. Extended unscented transformation technique has been applied for computing the contribution of uncertainty of each attribute, which is then propagated, for the measurement and covariance analysis of the cross section of 100Mo (n, 2n) 99Mo and 96Mo (n, p) 96Nb reactions. The results obtained agree closely with the experimental data, model data and data in various evaluated nuclear data libraries.