JEE Main 2024 · 1 Feb 2024 Shift 1

Arrange the bonds in order of increasing ionic character in the molecules, LiF, K₂O, N₂, SO₂ and ClF₃:

1. AN₂ < SO₂ < ClF₃ < K₂O < LiF
2. BN₂ < ClF₃ < SO₂ < K₂O < LiF
3. CClF₃ < N₂ < SO₂ < K₂O < LiF
4. DLiF < K₂O < ClF₃ < SO₂ < N₂

Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :

1. Aq = 0, ΔT ≠ 0, w = 0
2. Bq ≠ 0, ΔT = 0, w = 0
3. Cq = 0, ΔT = 0, w = 0
4. Dq = 0, ΔT < 0, w ≠ 0

In case of isoelectronic species the size of F⁻, Ne and Na⁺ is affected by :

1. APrincipal quantum number (n)
2. BNuclear charge (z)
3. CElectron-electron interaction in the outer orbitals
4. DNone of the factors because their size is the same

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : PH₃ has lower boiling point than NH₃. Reason (R) : In liquid state NH₃ molecules are associated through vander Waal’s forces, but PH₃ molecules are associated through hydrogen bonding. In the light of the above statements, choose the most appropriate answer from the options given below :

1. ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
2. BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
3. C(A) is correct but (R) is not correct
4. D(A) is not correct but (R) is correct

In acidic medium, K₂Cr₂O₇ shows oxidising action as represented in the half reaction : Cr₂O₇²⁻ + XH⁺ + Ye⁻ → 2A + ZH₂O X, Y, Z and A are respectively are :

1. A8, 6, 4 and Cr₂O₃
2. B14, 7, 6 and Cr³⁺
3. C14, 6, 7 and Cr³⁺
4. D8, 4, 6 and Cr₂O₃

Which of the following reactions are disproportionation reactions ?

1. ACu⁺ → Cu²⁺ + Cu
2. B3MnO₄²⁻ + 4H⁺ ⟶ 2MnO₄⁻ + MnO₂ + 2H₂O
3. C2KMnO₄ ⟶ K₂MnO₄ + MnO₂ + O₂
4. D2MnO₄⁻ + 3Mn²⁺ + 2H₂O ⟶ 5MnO₂ + 4H⁺ Choose the correct answer from the options given below :

Given below are two statements : Statement (I) : A solution of [Ni(H₂O)₆]²⁺ is green in colour. Statement (II) : A solution of [Ni(CN)₄]²⁻ is colourless. In the light of the above statements, choose the most appropriate answer from the options given below :

1. ABoth Statement I and Statement II are correct
2. BBoth Statement I and Statement II are incorrect
3. CStatement I is correct but Statement II is incorrect
4. DStatement I is incorrect but Statement II is correct

Which of the following complex is homoleptic ?

1. A[Co(NH₃)₄Cl₂]⁺
2. B[Ni(NH₃)₂Cl₂]
3. C[Fe(NH₃)₄Cl₂]⁺
4. D[Ni(CN)₄]²⁻