To test for the presence of chloride ions in ion, correct sequence of reagents to use is
Ba(NO3)2(aq) then HNO3(aq).
HCl(aq) then Ba(NO3)2(aq).
HCl(aq) then Ag3(aq).
HNO3(aq) then fresh FeSO4(aq).
HNO3(aq) then AgNO3(aq).
Correct answer is E
No explanation has been provided for this answer.