What do you observe when dilute sulphuric acid is added to granulated zinc?

What happens when dilute sulphuric acid is added to zinc granules? Select the correct option.

What do you observe when

(a) dilute sulphuric acid is added to granulated zinc ?

(b) a few pieces of iron are dropped in a blute solution of sodium chloride ?

(c) silver nitrate is added to a solution to a of sodium chloride ?

(d) ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.

(e) solid lead nitrate is heated ?

(f) when dilute sulphuric acid is added to barium chloride solution ?

When zinc granules are added to dilute hydrochloric acid .what is happening around zinc granules? Is there any change in temperature?