Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE MainChemistryp Block Elements (Group 15, 16, 17 & 18)

Consider the following unbalanced chemical equations representing the reactions involving halogens ( X, Y, Z ): (i) Y₂ + H₂O H^+ + Y^- + O₂ (ii) X₂ + H₂O HX + HOX (iii) Z^- + H^+ + O₂ Z₂ + H₂O Identify the halogens X, Y , and Z respectively.

Options

  1. AX = F , Y = Cl , Z = I
  2. BX = Cl , Y = I , Z = F
  3. CX = Cl , Y = F , Z = I
  4. DX = I , Y = F , Z = Br

Correct answer

C. X = Cl , Y = F , Z = I

Step-by-step solution

Reaction (i) shows the oxidation of water to oxygen by a halogen. Among halogens, only fluorine ( F₂ ) oxidises water to oxygen. Thus, Y is F . Reaction (ii) shows the disproportionation of a halogen in water to form hydrohalic and hypohalous acids. Chlorine ( Cl₂ ) and bromine ( Br₂ ) undergo this reaction. Thus, X can be Cl or Br . Reaction (iii) shows the oxidation of a halide ion by oxygen in an acidic medium. The reaction of iodine with water is non-spontaneous, but the reverse reaction occurs, i.e., iodide io

Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

Correct statement(s) about the compounds X , Y and Z is(are) 2026Correct statement(s) about the compounds P , Q and R is(are) 2026Find the correct statements related to group 15 hydrides. A. Reducing nature increases from NH₃ to BiH₃ B. Tendency to donate lone pair of electrons decreases from NH₃ to BiH₃ C. T 2026Treatment of a gas ' X ' with a freshly prepared ferrous sulphate solution gives a compound ' Y ' as a brown ring. The compounds X and Y are. 2026Correct statements from the following are: A. Nitrogen in oxidation states from +1 to +4 disproportionates in acid medium. B. Nitrogen has the ability to form d - p multiple bonds 2026Given below are two statements: Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation state of oxygen in SO₂ is -2 and in OF₂ it is +2 . 2026Given below are two statements : Statement (I) : Oxidising power of halogens decreases in the order F₂ > Cl₂ > Br₂ > I₂ , which is the basis of "Layer test". Statement (II) : "Laye 2026Given below are two statements : Statement I : The increasing order of boiling point of hydrogen halides is HCl Statement II : The increasing order of melting point of hydrogen hal 2026 Full p Block Elements (Group 15, 16, 17 & 18) list All JEE Main PYQs