CUET UG 2023 Chemistry Question Paper (11-Jun-2023) (Shift 3)

Question 1

Match List-I with List-II:List-IList-II(A) EoM2+/M for Zn is negative(I) due to almost identical radii(B) Cr2+ is a reducing agent(II) Ionic character decreases as oxidation number of metal increases.(C) V2O5 has a low melting point(III) Zn2+ is more stable than Zn.(D) Zr and Hf occur together in nature(IV) It attains stable half-filled t2g level.

Accepted Answer

(A)-(III), (B)-(IV), (C)-(II), (D)-(I)

Answer

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

Answer

(A)-(III), (B)-(I), (C)-(IV), (D)-(I)

Answer

(A)-(IV), (B)-(III), (C)-(II), (D)-(II)

Question 2

Oxidation states of which oxides of halogens are not the same? A) ClO2 B) Cl2O3 C) BrO2 D) I2O4 E) I2O5 Choose the correct answer from the options given below:

Accepted Answer

(B) and (E) only

Answer

(A) and (E) only

Answer

(C) and (D) only

Answer

(D) and (E) only

Question 3

Which of the following processes is responsible for the formation of a Delta when river water meets the sea water?

Accepted Answer

Coagulation

Answer

Peptization

Answer

Colloid formation

Answer

Emulsification

Question 4

Which of the following statements is incorrect with respect to the use of a catalyst in the reversible reaction?

Accepted Answer

The catalyst increases the rate of only the forward reaction.

Answer

The catalyst increases the rates of both the forward and the backward reaction.

Answer

The catalyst decreases the activation energy of the overall reaction.

Answer

The catalyst itself does not undergo any chemical change.

Question 5

The relative reactivity order of the following halides towards Sn1 reaction is:(I) (II) CH3–CH2–Cl(III) CH3Cl(IV) Ph2CHCl

Accepted Answer

(IV) > (I) > (II) > (III)

Answer

(III) > (IV) > (II) > (I)

Answer

(I) > (IV) > (II) > (III)

Answer

(III) > (II) > (I) > (IV)

List-I	List-II
(A) E^o_M2+/_M for Zn is negative	(I) due to almost identical radii
(B) Cr²⁺ is a reducing agent	(II) Ionic character decreases as oxidation number of metal increases.
(C) V₂O₅ has a low melting point	(III) Zn²⁺ is more stable than Zn.
(D) Zr and Hf occur together in nature	(IV) It attains stable half-filled t_2g level.

CUET UG 2023 Chemistry Question Paper (11-Jun-2023) (Shift 3)

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