Does the ratio of neutrons to protons in a nucleus increase, decrease or remain the same after the emission of an `alpha` - particle ?

Does the expiration rate increase or decrease after exercises?

Does the number of moles of reaction products increase, decrease, or remains same when each of the following equilibrium is subjected to a decrease in pressure by increasing the volume? PCl_(5)(g)hArrPCl_(3)(g)+Cl_(2)(g)

Does the number of moles of reaction products increase, decrease, or remains same when each of the following equilibrium is subjected to a decrease in pressure by increasing the volume? Cao(s)+CO(_2)(g)hArrCaCO_(3)(s)

The increasing order of e/m value for electron, proton, neutron and alpha particle is

The increasing order of e/m values for electron, proton, neutron and alpha particle is

Does the weight of iron rod increase or decrease, on rusting?