Column-I		Column-II
A)	BeO	P)	Amphoteric
B)	Al2O3	Q)	Diagonal relationship
C)	MgO	R)	Lime water
D)	CaO	S)	Baryta water
E)	BaO	T)	Water insoluble
		U)	Maximum soluble in H2O
		V)	Estimated by EDTA

	(A)	(B)	(C)	(D)	(E)
1)	PT	PT	V	RV	SU
2)	SU	PQT	PQT	QV	RV
3)	SU	QV	PQT	PQT	RV
4)	QV	RV	SU	PQT	SU

A) BeO – P) BeO is an amphoteric substance
 – Q) ‘Be’ exhibits diagonal relationship with Al
– T) BeO is insoluble in H₂O due to greater lattice energy.
B) Al₂O₃– P)Al₂O₃ is an amphoteric oxide
Q) ‘Al’ exhibits diagonal relation ship with Be
T) Al₂O₃ is water insoluble
C) MgO – Q) ‘Mg’ exhibits diagonal relationship
V) ‘Mg’ is estimated by using EDTA
D) CaO – R) CaO is used in the preparation of lime water
E) Dao – S) Baryta waer
U) Maximum soluble in H₂O
V) Ca is estimated by using EDTA