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

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)

More the H+ ion concentration increases the rate of rusting due to

Rusting of iron is

A light bulb and an open coil inductor are connected to an ac source through a key as shown in the figure. The switch is closed and after sometime, an iron rod is inserted into interior of the inductor. The glow of the light bulb (a) increases , (b) decreases , (c ) is unchanged, as the iron rod is inserted. Given your answer with reasons.

IF the strength of the electric current increases, does the magnetic field increase or decrease?

Expansion during heating (a) occurs in solids only (b) causes decrease in weight ( c) is due to increase of interatomic spacing