Chemical reaction and equations worksheet-4
Multiple Choice Questions:
(A) Ni+CO3– (B) Ni+CO32– (C) Ni2+CO32– (D) Ni4+CO33–
(A) NH4– O2– (B) NH3– O22– (C) NH4+ O2– (D) NH4+ O2
(E) NH4+ O2–
(A) Zn(NO3)2 (B) ZnNO3 (C) Zn2(NO3)3 (D) Zn(NO3)3
(E) None
(A) NH4Cl2 (B) (NH4)2Cl (C) NH4Cl3 (D) NH4Cl
(A) HgCl2 (B) Hg2Cl2 (C) HgCl (D) None
Al + Fe2O3 → Al2O3 + Fe (A) 2Al, Fe2O3, Al2O3, 2Fe
(B) Al, Fe2O3, Al2O3, 2Fe (C) 2Al, Fe2O3, Al2O3, Fe
(D) 2Al, 2Fe2O3, Al2O3, 2Fe
SO2 + H2S → H2O + S
(A) SO2, H2S, 2H2O, 3S (B) SO2, 2H2S, 2H2O, 3S
(C) SO2, 2H2S, H2O, 3S (D) SO2, 2H2S, 2H2O, S
(A)
(B)
(C)
(D)
(A) Mg(SO4)2 + Zn, combination reaction
(B) Mg2SO4 + Zn, displacement reaction
(C) MgSO4 + Zn2, oxidation reaction
(D) MgSO4 + Zn, displacement reaction
(A)
(B)
(C)
(D)
Answer keys:
(C)
(A) Super oxide ion (O2–) , per oxide ion (O–1) and oxide ion O2–
(A) Valency of Zinc is 2 and of nitrate ion (NO3)–1 is 1.
(D) Valency of ammonium ion is 1 and chloride ion is 1.
(A) Valency of mercurous ion is 1, mercuric ion is 2 and chloride ion is 1. Mercurous chloride is Hg2Cl2
(A)
(B)
(A)
(D)
(B) It is a decomposition reaction.