B) In a laboratory procedure for preparing ZnSO4, a solid X was added with stirring to warm, dilute H2SO4 until no more of it
dissolved: Excess of X was removed from the reaction
mixture. The solution of ZnSO4 obtained was concentrated
to a small volume and then set aside.
(i) Suggest three substances which X could be.
(ii) Name the method used for removing excess of X.
(iii) What method was used to concentrate the ZnSO4
A(aq)
4(aq)
(iv) State what later appeared in the concentrated Znso,
that was set aside.
[ 6 marks

your answer would be “dry”

hurricanes form in warm water

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.