JEE Main 2024 · 27 Jan 2024 Shift 1

Choose the polar molecule from the following :

1. ACCl₄
2. BCO₂
3. CCHCl₃
4. DCH₂ = CH₂

A solution of two miscible liquids showing negative deviation from Raoult’s law will have :

1. Adecreased vapour pressure, increased boiling point
2. Bincreased vapour pressure, increased boiling point
3. Cdecreased vapour pressure, decreased boiling point
4. Dincreased vapour pressure, decreased boiling point

Given below are two statements : Statement (I) : Aqueous solution of ammonium carbonate is basic. Statement (II) : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on Kₐ and Kᵦ value of acid and the base forming it. 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

Given below are two statements : Statement (I) : The 4f and 5f - series of elements are placed separately in the Periodic table to preserve the principle of classification. Statement (II) : s-block elements can be found in pure form in nature. 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 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

Element not showing variable oxidation state is :

1. AFluorine
2. BChlorine
3. CBromine
4. DIodine

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Melting point of Boron (2453 K) is unusually high in group 13 elements. Reason (R) : Solid Boron has very strong crystalline lattice. 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 true but (R) is false
4. D(A) is false but (R) is true

Which of the following electronic configuration would be associated with the highest magnetic moment ?

1. A[Ar] 3d⁸
2. B[Ar] 3d⁶
3. C[Ar] 3d³
4. D[Ar] 3d⁷

Consider the following complex ions P = [FeF₆]³⁻ Q = [V(H₂O)₆]²⁺ R = [Fe(H₂O)₆]²⁺ The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is :

1. AR < Q < P
2. BQ < R < P
3. CQ < P < R
4. DR < P < Q