JEE Main 2024 · 9 Apr 2024 Shift 2

The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 'A' × 10¹² hertz and that has a radiant intensity in that direction of 1⁄'B' watt per steradian. 'A' and 'B' are respectively

1. A450 and 683
2. B450 and 1⁄683
3. C540 and 683
4. D540 and 1⁄683

The correct increasing order for bond angles among BF₃, PF₃ and ClF₃ is :

1. ABF₃ < PF₃ < ClF₃
2. BPF₃ < BF₃ < ClF₃
3. CClF₃ < PF₃ < BF₃
4. DBF₃ = PF₃ < ClF₃

For a sparingly soluble salt AB₂, the equilibrium concentrations of A²⁺ ions and B⁻ ions are 1.2 × 10⁻⁴ M and 0.24 × 10⁻³ M, respectively. The solubility product of AB₂ is :

1. A6.91 × 10⁻¹²

Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning :

1. AΛₘ − Λₘ° + AC¹ᐟ² = 0
2. BΛₘ − Λₘ° − AC¹ᐟ² = 0
3. CΛₘ²C − KₐΛₘ°² + KₐΛₘΛₘ° = 0
4. DΛₘ²C + KₐΛₘ°² − KₐΛₘΛₘ° = 0

The electronic configuration of Einsteinium is : (Given atomic number of Einsteinium = 99)

1. A[Rn] 5f¹² 6d⁰ 7s²
2. B[Rn] 5f¹¹ 6d⁰ 7s²
3. C[Rn] 5f¹⁰ 6d⁰ 7s²
4. D[Rn] 5f¹³ 6d⁰ 7s²

Give below are two statements : Statement I : The higher oxidation states are more stable down the group among transition elements unlike p-block elements. Statement II : Copper can not liberate hydrogen from weak acids. 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 coordination environment of Ca²⁺ ion in its complex with EDTA⁴⁻ is :

1. Atetrahedral
2. Bsquare planar
3. Coctahedral
4. Dtrigonal prismatic

The incorrect statement regarding ethyne is

1. AEthyne is linear
2. BThe carbon - carbon bonds in ethyne is weaker than that in ethene
3. CBoth carbons are sp hybridised
4. DThe C – C bonds in ethyne is shorter than that in ethene