Which one of the following is an amphoteric oxide?
02Easy127×since 2002Q1628
Among Al₂O₃, SiO₂, P₂O₃ and SO₂ the correct order of acid strength is
03Easy127×since 2002Q1629
Which of the following oxides is amphoteric in character?
04Hard127×since 2002Q1630
In which of the following arrangements, the sequence is not strictly according to the property written against it
05Easy127×since 2002Q1647
Aluminium is usually found in +3 oxidation state. In contrast, thallium exists in + 1 and + 3 oxidation states. This is due to :
06Hard127×since 2002Q1631
Which one of the following order represents the correct sequence of the increasing basic nature of the
given oxides ?
07Easy127×since 2002Q1632
Which one of the following is an oxide?
08Easy127×since 2002Q1633
The acidic, basic and amphoteric oxides,
respectively, are :
09Easy127×since 2002Q1634
Three elements X, Y and Z are in the 3^rd period
of the periodic table. The oxides of X, Y and Z,
respectively, are basic, amphoteric and acidic.
The correct order of the atomic numbers of X,
Y and Z is :