1) What is the chemical formula of lead (II) sulphide? a) PbS b) PbS2 c) PbSO4 d) PbSO3 2) What is the chemical formula of lead (IV) chloride? a) PbCl2 b) Pb2Cl4 c) PbCl d) PbCl4 3) What is the chemical formula of lead (II) oxide? a) PbO b) Pb2O c) PbO2 d) Pb2O4 4) What is the chemical formula of lead (II) nitrate? a) PbNO3 b) Pb(NO2)3 c) Pb(NO3)2 d) Pb3N2 5) What is the chemical formula of hydrogen sulphide ? a) HS b) HS2 c) H2S d) H2SO4

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