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p-Block Elements (Group 15–18) · Question 5

JEE Advanced 2025 Paper 2MCQMedium📈 Topic in 17% papers+4−1
1

The complete hydrolysis of ICl, ClF3 and BrF5, respectively, gives

  1. IO-, ClO2- and BrO3-
  2. IO3-, ClO2- and BrO3-
  3. IO-, ClO- and BrO2-
  4. IO3-, ClO4- and BrO2-

Answer

(1) IO-, ClO2- and BrO3-

Solution

In hydrolysis of an interhalogen XX'n, the central (larger) halogen keeps its oxidation state and forms an oxoacid; the smaller halogen gives HX'.

ICl + H2O HOI + HCl ; I (+1) IO-

ClF3 + 2H2O HClO2 + 3HF ; Cl (+3) ClO2-

BrF5 + 3H2O HBrO3 + 5HF ; Br (+5) BrO3-

Answer: (A)

JEE Advanced 2025 Paper 2

Keep practising — p-Block Elements (Group 15–18)

2

The compound(s) with P–H bond(s) is(are)

  1. H3PO4
  2. H3PO3
  3. H4P2O7
  4. H3PO2
JEE Advanced 2025 Paper 2
3

At room temperature, disproportionation of an aqueous solution of in situ generated nitrous acid (HNO2) gives the species

  1. H3O+, NO3- and NO
  2. H3O+, NO3- and NO2
  3. H3O+, NO- and NO2
  4. H3O+, NO3- and N2O
JEE Advanced 2024 Paper 1
4

Based on VSEPR model, match the xenon compounds given in List-I with the corresponding geometries and the number of lone pairs on xenon given in List-II and choose the correct option.

  1. P-5, Q-2, R-3, S-1
  2. P-5, Q-3, R-2, S-4
  3. P-4, Q-3, R-2, S-1
  4. P-4, Q-2, R-5, S-3
JEE Advanced 2024 Paper 1
5

The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are

  1. [PF4]+[PF6]- and [PCl4]+[PF6]-
  2. [PCl4]+[PCl4F2]- and [PCl4]+[PF6]-
  3. PF3 and PCl3
  4. PF5 and PCl3
JEE Advanced 2024 Paper 2
6

The compound(s) having peroxide linkage is(are)

  1. H2S2O7
  2. H2S2O8
  3. H2S2O5
  4. H2SO5
JEE Advanced 2024 Paper 2

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