p-Block Elements (Group 15–18)

Which of the following statements is not true for halogens?

1. All are oxidizing agents.
2. All form monobasic oxyacids.
3. All but fluorine show positive oxidation states.
4. Chlorine has the highest electron-gain enthalpy.

Match the interhalogen compounds of column-I with the geometry in column-II and assign the correct code.

1. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
2. (a)-(v), (b)-(iv), (c)-(iii), (d)-(ii)
3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
4. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

In which pair of ions both the species contain S-S bond?

1. S4O62-, S2O32-
2. S2O72-, S2O82-
3. S4O62-, S2O72-
4. S2O72-, S2O32-

Name the gas that can readily decolourise acidified KMnO4 solution.

1. SO2
2. NO2
3. P2O5
4. CO2

HgCl2 and I2 both when dissolved in water containing I- ions, the pair of species formed is

1. HgI2, I-
2. HgI42-, I3-
3. Hg2I2, I-
4. HgI2, I3-

Match the compounds given in column I with the hybridisation and shape given in column II and mark the correct option

1. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
4. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

Which is the correct statement for the given acids?

1. Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.
2. Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid.
3. Both are diprotic acids.
4. Both are triprotic acids.

Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

1. Br2 > I2 > F2 > Cl2
2. F2 > Cl2 > Br2 > I2
3. I2 > Br2 > Cl2 > F2
4. Cl2 > Br2 > F2 > I2

When copper is heated with conc. HNO3 it produces

1. Cu(NO3)2, NO and NO2
2. Cu(NO3)2 and N2O
3. Cu(NO3)2 and NO2
4. Cu(NO3)2 and NO

Among the following the correct order of acidity is

1. HClO2 < HClO < HClO3 < HClO4
2. HClO4 < HClO2 < HClO < HClO3
3. HClO3 < HClO4 < HClO2 < HClO
4. HClO < HClO2 < HClO3 < HClO4