JEE Main 2024 · 31 Jan 2024 Shift 1

The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals

1. Ahave the same energy
2. Bhave the minimum overlap
3. Chave same symmetry about the molecular axis
4. Dhave different symmetry about the molecular axis Choose the most appropriate from the options given below:

Identify the mixture that shows positive deviations from Raoult's Law

1. ACHCl₃ + (CH₃)₂CO
2. B(CH₃)₂CO + C₆H₅NH₂
3. CCHCl₃ + C₆H₆
4. D(CH₃)₂CO + CS₂

Identify the factor from the following that does not affect electrolytic conductance of a solution.

1. AThe nature of the electrolyte added.
2. BThe nature of the electrode used.
3. CThe nature of solvent used.
4. DConcentration of the electrolyte.

Integrated rate law equation for a first order gas phase reaction is given by (where Pᵢ is initial pressure and Pₜ is total pressure at time t)

1. Ak = (2.303/t) × log((2Pᵢ − Pₜ)/Pᵢ)
2. Bk = (2.303/t) × log(Pᵢ/(2Pᵢ − Pₜ))
3. Ck = (2.303/t) × log(2Pᵢ/(2Pᵢ − Pₜ))
4. Dk = (2.303/t) × (Pᵢ/(2Pᵢ − Pₜ))

The correct sequence of electron gain enthalpy of the elements listed below is

1. AAr
2. BBr
3. CF
4. DS Choose the most appropriate from the options given below:

Consider the oxides of group 14 elements SiO₂, GeO₂, SnO₂, PbO₂, CO and GeO. The amphoteric oxides are

1. ASiO₂, GeO₂
2. BSnO₂, CO
3. CGeO, GeO₂
4. DSnO₂, PbO₂

Identify correct statements from below:

1. AThe chromate ion is square planar.
2. BDichromates are generally prepared from chromates.
3. CThe green manganate ion is diamagnetic.
4. DDark green coloured K₂MnO₄ disproportionates in a neutral or acidic medium to give permanganate.
5. EWith increasing oxidation number of transition metal, ionic character of the oxides decreases. Choose the correct answer from the options given below:

The metals that are employed in the battery industries are

1. AFe
2. BMn
3. CNi
4. DCr
5. ECd Choose the correct answer from the options given below: