Answer
(a) The nuclear equation is $N_{7}^{14} + n_{0}^{1} -> N_{7}^{15} + \gamma$
(b) X-ray analysis detects shape, particularly of metal objects. Bombs can be constructed of a variety of shapes and sizes. Thermal neutron analysis is much more specific than X-ray analysis. However, articles that are high like nitrogen and other than explosives (such as silk, wool and polyurethane) will give false test results.
Work Step by Step
(a) The nuclear equation is $N_{7}^{14} + n_{0}^{1} -> N_{7}^{15} + \gamma$
(b) X-ray analysis detects shape, particularly of metal objects. Bombs can be constructed of a variety of shapes and sizes. Thermal neutron analysis is much more specific than X-ray analysis. However, articles that are high like nitrogen and other than explosives (such as silk, wool and polyurethane) will give false test results.