HELLO MADHWESH,
CHO – CHO cannot show the geometrical isomerism because it is a symmetrical molecule
and also CHO-NH2 will not show you geometrical isomerism
because it does not have tetrahedral carbon
and also here carbon is sp2 hybridized
that means it is planar in nature,so that planar molecule will possess plane of symmetry
so that it cannot show geometrical isomerism
THANK YOU