List of top Questions asked in CUET (PG)- 2023

Following anti-oxidant is used to prevent oxidative degradation of plastic :

Given below are two statements:
Statement I: For Na⁺ | K⁺ pump, the active ion transport involve three Na⁺ expelled out for two K⁺ ions intake across the cell membrane.
Statement II: Binding of K⁺ induces phosphorylation of ADP to ATP.
In the light of the above statements, choose the most appropriate answer from the options given below:

Considering the following reactions and their reduction potentials in acidic medium

What will be the free energy change (\(\triangle\)G) of the reaction. \(IO^-_3\)→ \(\frac{1}{2}I_2\)

Phenol derivatives can be prepared from corresponding chlorobenzene derivatives via nucleophilic substitution reaction only when it contains

Among the following mono nitrophenols which one is most acidic.

Deduce the structure of the corresponding alcohol which shows the following reaction
C₆H₁₄0₃ \(\stackrel{2HIO_4}{\rightarrow}\) CH₃CHO + CH₃CH₂CHO + HCOOH

Which of the following orders are correct for noble gases?
A. Solubility in water He<Ne < Ar<Kr<Xe
B. Boiling points He< Ne <Ar<Kr <Xe
C. Chemical reactivity He > Ne >Ar> Kr > Xe
D. Enthalpy of vaporisation He> Ne > Ar> Kr> Xe
Choose the correct answer from the options given below:

The experimental magnetic moment (3.4 BM) of a hydrated salt of \(Eu^{3+}\) at 300 K is significantly different from calculated value. The difference is due to (Given atomic number of \(E_u\) = 63)

Find out the degree of dissociation of HF in 1 M aqueous solution. The value of K for the ionic equilibrium \(HF ⇌ H^++F^-\; is \;7.2 × 10^{-4.}\)

Which of the following expression holds good for Freundlich adsorption isotherm ?

For the reaction
2N₂O₅→4NO₂+0₂
Rate of the reaction is:

The hydrolysis products of \(Al_4,C_3\), and \(Be_2C\) are

The relative order of stability of conformers of 1,3-dimethylcyclohexane is (equatorial - e, axial-a)

Which of the following compound represent the correct structure of (2R, 3S)-2,3-pentanediol?

Arachno and nido structure of Boranes have general formula respectively

Phenylbenzoate can be prepared from phenol using which of the following name reaction?

Select the option which is correct about photochemical reaction:
A. Temperature has very little effect on rate of reaction.
B. The presence of light is the primary requirement.
C. AG may be positive or negative for spontaneous photochemical reaction.
D. Photochemical reaction always involves emission of light radiation.
Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Concentrated HNO₃ is colourless but often turns yellow on keeping.
Reason R: Photo chemical decomposition of HNO₃ gives NO₂.
In the light of the above statements, choose the most appropriate answer from the options given below:

The structure of a carborane, \(C_2B_5H_7\), is

The initial rate of a reaction in which the substrate, S, undergoes a reaction in the presence of catalyst C, was found to be equal to v₀ = \(\frac{K_2[S]_0[C]_0}{[S]_0+Km} \)The probable condition in which the reaction took place was

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The moving boundary method yields more accurate data on transference number than does the Hittorf method.
Reason R: In moving boundary method, indicator electrolyte has same anion as principal electrolyte and is placed at the bottom due to its higher density.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II:
     List I (Reaction)                                                                List II (Mettalo enzyme)
(A) \(R-H+O_2+2H^++2e^-R-OH+H_2O\)         (I) Cytochrome P-450
(B) \(2H_2O_2\rightarrow 2H_2O+O_2\)                                                 (II) Catalase
(C) e-transfer protein                                                           (III) Ferredoxin
(D) \(O_2+4H^++4e^- \rightarrow2H_2O\)                                     (IV)   Cytochrome (oxidase)
Choose the correct answer from the options given below:

Identify the class of the following reaction.

Identify the major product in the following reaction

The values of van't Hoff factors for NaCl, KCI and K₂SO₄, respectively are