Arrange the following in correct order of acidity
  (I) `CaO`, (II) `SO_(2)`, (III) `SO_(3)`, (IV) `P_(2)O_(5)`

Arrange the following oxides in decreasing acidic order SiO_(2) (I) CO_(2) (II) SO_(3) (III) N_(2)O_(5) (IV)

Arrange the following in their decreasing order of Basicity. (I) (III) (IV) NH_3 .

Arrange the following in the increasing order of acidic strength (i) FSO_(3)H (ii) HCO_(3)^(-) (iii) H_(2)O (iv) HSO_(4)^(-)

Arrange the following groups in their decreasing order of -I effect. I. NO_(2) II. SO_(3)H III. F IV. NH_(2) The correct choice is :

Acidic order of following compounds is : (I) H_(2)O_(2)," (II)" H_(2)O, (III) H_(2)," (IV)"D_(2)O

Arrange the following In decreasing order of p K_b values (I) C_2H_5 NH_2 (II) PhNHMe (III) (C_2H_5)_2 NH (IV) PhNH_2

Which of the following species are hypervalent ? (I) ClO_(4)^(-) " "(II) BF_(3) (III) SO_(4)^(-2)" "(IV) CO_(3)^(-2)

The following compounds have been arranged in order of their increasing stabilities. Identify the correct order. (I) K_(2)CO_(3) (II) MgCO_(3) (III) CaCO_(3) (IV) BeCO_(3)

Arrange the following molecule/species in the order of their increasing bond orders. (I) O_2 , (II) O_2^(-) , (III) O_2^(2-) , (IV) O_2^(+)

Which of the following compound is most acidic? Cl_(2)O_(7) , P_(4)O_(10) , SO_(3) B_(2)O_(3)