RE-NEET Chemistry Class 12 Questions

The standard electrode potential (E°) for the half-cell reaction Fe³⁺ + e⁻ → Fe²⁺ at 298 K is (Given: E°(Fe³⁺/Fe) = -0.04 V and E°(Fe²⁺/Fe) = -0.44 V at 298 K)

For a salt XY, which is a strong electrolyte, the plot of Λₘ versus √C has a slope of^{-90}.0 S cm² mol⁻³/² L¹/² at 298 K. At 0.01 M concentration of XY, the value of Λₘ is 145.0 S cm² mol⁻¹. The limiting molar conductivity of Y⁻ ion (Λ⁰ᵧ⁻, in S cm² mol⁻¹) at 298 K will be (Given: Λ⁰ₓ⁺ = 74.0 S cm² mol⁻¹)

According to crystal field theory, the correct order of ligands with respect to their decreasing order of field strength is

Given below are two statements: Statement-I: [Fe(ox)₃]³⁻ is chiral. Statement-II: trans-[Cr(H₂O)₂(ox)₂]⁻ is chiral. (Given: oxH₂ = HOOC - COOH) In light of the above statements, choose the most appropriate answer from the options given below:

For an elementary chemical reaction, the Arrhenius plot is given below. If the energy of activation is 6.64 kJ mol⁻¹ and R = 8.3 J K⁻¹ mol⁻¹, the temperature at which the rate constant becomes e² min⁻¹ is

Consider the following statements about the solutions formed by mixing two liquids. A. An ideal solution thus formed obeys Raoult’s law throughout the composition range. B. Mixture of chloroform and acetone shows negative deviation from Raoult’s law. C. Mixture of aniline and phenol shows positive deviation from Raoult’s law.

The correct statement about peptides and proteins is

2A → B is a zero-order reaction, where k = 1.0 mol L⁻¹ min⁻¹. If the initial concentration of A is 2 M, then the time taken to complete 75% of the reaction will be

Identify the reactions which give aniline as the major product.

Among the species given below, the spin-only magnetic moment is highest for (Given: Atomic number of Ti = 22, Mn = 25, Fe = 26 and Co = 27)

The complex which has facial and meridional isomers is (Given: py = pyridine and en = H₂N⁻CH₂-CH₂-NH₂)

A 1:3 electrolyte in an aqueous solution is

The lanthanide ion having four unpaired electrons is (Given: Atomic numbers of Ce=58, Nd=60, Tb=65 and Ho=67)

The formula of tetraammineaquachloridocobalt(III) chloride is

Assertion A: For an ideal solution formed by mixing liquids P and Q, Δ_mix H = 0 and Δ_mix V = 0. Reason R: No interactions occur between P and Q. In the light of the above statements, choose the most appropriate answer from the options given below.

The correct order of solubility of the given salts in water at 298 K is

Following data is for a reaction between reactants A and B: Rate [A] [B] mol L⁻¹ s⁻¹ 2 × 10⁻³ 0.1 M 0.1 M 4 × 10⁻³ 0.2 M 0.1 M 1.6 × 10⁻² 0.2 M 0.2 M The order of the reaction with respect to A and B, respectively, are

Ethylene diaminetetraacetate ion is a/an:

The amount of glucose required to prepare 250 mL of M/20 aqueous solution is: (Molar mass of glucose: 180 g mol⁻¹)

Which of the following is not an ambidentate ligand?

The compound that does not undergo Friedel-Crafts alkylation reaction but gives a positive carbylamine test is:

Which of the following plot represents the variation of ln k versus 1/T in accordance with Arrhenius equation?

Identify D in the following sequence of reactions: CH₃CH₂OH \(\xrightarrow{P + I_2}\) A \(\xrightarrow{Mg, \text{dry ether}}\) B \(\xrightarrow{HCHO}\) C \(\xrightarrow{H_2O}\) D (major)

Match List-I with List-II:

The standard cell potential of the following cell Zn|Zn²⁺ (aq)|Fe²⁺(aq)|Fe is 0.32 V. Calculate the standard Gibbs energy change for the reaction : Zn(s) + Fe²⁺(aq) → Zn²⁺(aq) + Fe(s) (Given : 1 F = 96487 C)

The following reaction method is not suitable for the preparation of the corresponding haloarene products, due to high reactivity of halogen, when X is:

The alkane that can be oxidized to the corresponding alcohol by KMnO₄ as per the equation is, when:

Rate constants of a reaction at 500 K and 700 K are 0.04 s⁻¹ and 0.14 s⁻¹, respectively; then, activation energy of the reaction is: (Given: log3.5 = 0.5441, R = 8.31 J K⁻¹ mol⁻¹)

Mass of glucose (C₆H₁₂O₆) required to be dissolved to prepare one litre of its solution which is isotone with 15 g L⁻¹ solution of urea (NH₂CONH₂) is (Given: Molar mass in g mol⁻¹ C : 12, H : 1, O : 16, N : 14)

[Mn₂(CO)₁₀] and [Co₂(CO)₈] structures have A. Metal-Metal linkage B. Terminal CO groups C. Bridging CO groups D. Metal in zero oxidation state Choose the correct answer from the options given below