JEE Main 2025 · 22 Jan 2025 Shift 2

Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is :

1. A3 m
2. B2.79 m
3. C2 m
4. D1.79 m

The species which does not undergo disproportionation reaction is :

1. AClO⁻
2. BClO₂⁻
3. CClO₃⁻
4. DClO₄⁻

Arrange the following compounds in increasing order of their dipole moment : HBr, H₂S, NF₃ and CHCl₃

1. ANF₃ < HBr < H₂S < CHCl₃
2. BH₂S < HBr < NF₃ < CHCl₃
3. CCHCl₃ < NF₃ < HBr < H₂S
4. DHBr < H₂S < NF₃ < CHCl₃

Given below are two statements : Statement (I) : An element in the extreme left of the periodic table forms acidic oxides. Statement (II) : Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table. In the light of the above statements, choose the correct answer from the options given below :

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

The maximum covalency of a non-metallic group 15 element ‘E’ with weakest E – E bond is:

1. A3
2. B4
3. C5
4. D6

Identify the homoleptic complex(es) that is/are low spin.

1. A[Fe(CN)₅NO]²⁻
2. B[CoF₆]³⁻
3. C[Fe(CN)₆]⁴⁻
4. D[Co(NH₃)₆]³⁺
5. E[Cr(H₂O)₆]²⁺ Choose the correct answer from the options given below:

The correct order of the following complexes in terms of their crystal field stabilization energies is:

1. A[Co(NH₃)₆]²⁺ < [Co(NH₃)₆]³⁺ < [Co(NH₃)₄]²⁺ < [Co(en)₃]³⁺
2. B[Co(NH₃)₄]²⁺ < [Co(NH₃)₆]²⁺ < [Co(en)₃]³⁺ < [Co(NH₃)₆]³⁺
3. C[Co(NH₃)₄]²⁺ < [Co(NH₃)₆]²⁺ < [Co(NH₃)₆]³⁺ < [Co(en)₃]³⁺
4. D[Co(en)₃]³⁺ < [Co(NH₃)₆]³⁺ < [Co(NH₃)₆]²⁺ < [Co(NH₃)₄]²⁺

Given below are two statements: Statement (I): Nitrogen, sulphur, halogen and phosphorus present in an organic compound are detected by Lassaigne’s Test. Statement (II): The elements present in the compound are converted from covalent form into ionic form by fusing the compound with Magnesium in Lassaigne’s test. In the light of the above statements, choose the correct answer from the options given below:

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