CUET Sample Paper for Chemistry

CUET UG
ENTRANCE
SAMPLE PAPER
2023
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2023 JUNE
MAY 2023

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CUET 2023 Overview

CUET is a Common entrance exam. The full form of CUET is Common University Entrance Test. It
is organized by National Testing Agency at a National level. It is organized by National Testing
Agency as a National level exam in India for admission in All Central Universities, and State, Deemed,
Private Universities accepting CUET scores.

Highlights of the examination are as follows.

Aspects Details

Name of Exam CUET 2023

Full Form of CUET Common University Entrance Test

Organizing Body NTA

Full Form of NTA National Testing Agency

Type of Exam Common Entrance Exam

Level of Exam National

Region India

Official Website cuet.samarth.ac.in

Courses Where BA, BCA, B.Sc, B.Com, BJMC, B.Pharm, D.Pharm, B.Tech, B.Voc, BVA,
Admission is Through BFA, BPA, BSW, Integrated MA Integrated B.Ed, Integrated M.Sc,
CUET Integrated B.Tech-M.Tech, Integrated MPA, BA LLB, BBA LLB, Diploma,
Shastri,

Colleges Where All Central Universities, and State, Deemed, Private Universities acepting
Admission is Through CUET scores
CUET

Minimum Educational Class 12th
Qualification

Mode of Exam Computer Based Test-CBT

Type of Questions Objective type with Multiple Choice Questions

Marking Scheme +5, -1

CUET 2023 Exam Pattern

The exam pattern is as follows

▪ Mode of Exam – The exam is a Computer Based Test-CBT.
▪ Question type – The questions are Objective type with Multiple Choice Questions.
▪ Number of Subjects – A candidate can choose upto 10 Subjects for giving the Exam.
▪ Language of Question Paper – The question paper is in 13 languages (Assamese, Bengali,
English, Gujarati, Hindi, Kannada, Malayalam, Marathi, Punjabi, Odia, Tamil, Telugu, and
Urdu).

Marking Scheme –
▪ Candidates get +5 marks for correct answer.
▪ And negative marks is -1 for incorrect answers

List of Languages/ Domain Specific Subjects /General Test offered under CUET (UG)-2023

Sample Paper
Chemistry

Q.No. 1 Which of the following process is not responsible for the presence of electric charge on the sol
particles?

(A) Electron capture by sol particles.

(B) Adsorption of ionic species from solution

(C) Formation of Helmholtz electrical double layer.

(D) Absorption of ionic species from solution.

Q.No. 2 An unripe mango placed in a concentrated salt solution to prepare pickle, shrivels
because_____________.

(A) It gains water due to osmosis

(B) It loses water due to reverse osmosis.

(C) It gains water due to reverse osmosis.

(D) It loses water due to osmosis.

Q.No. 3 Which of the following oxidation state is common for all lanthanoids?

(A) +2

(B) +3

(C) +4

(D) +5

Q.No. 4 Highest oxidation state of manganese in fluoride is +4 (MnF₄) but highest oxidation state in oxides
is +7 (Mn₂O₇) because ____________.

(A) fluorine is more electronegative than oxygen.

(B) fluorine does not possess d-orbitals.

(C) fluorine stabilises lower oxidation state.

(D) in covalent compounds fluorine can form single bond only while oxygen forms double bond.

Q.No. 5 Which of the following is a network solid ?

(A) SO₂(Solid)

(B) I₂

(C) Diamond
---

(D) H₂O (Ice)

Q.No. 6 Among the following amines, the strongest Brönsted base is __________.

(A)

(B) NH₃

(C)

(D)

Q.No. 7 The correct order of the packing efficiency in different types of unit cells is ________.

(A) fcc < bcc < simple cubic

(B) fcc > bcc > simple cubic

(C) fcc < bcc > simple cubic

(D) bcc < fcc > simple cubic

Q.No. 8 Which of the following polymers of glucose is stored by animals?

(A) Cellulose

(B) Amylose

(C) Amylopectin

(D) Glycogen

Q.No. 9 Which of the following pairs of ions are isoelectronic and isostructural?

(A) CO3 2–, NO3 –

(B) ClO32 – , CO3 –

(C) SO32 –, NO32–

(D) ClO3– , SO32–
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Q.No. 10 What is ‘A’ in the following reaction?

(A)

(B)

(C)

(D)

Q.No. 11 Structure of a disaccharide formed by glucose and fructose is given below. Identify anomeric
carbon atoms in monosaccharide units.

(A) ‘a’ carbon of glucose and ‘a’ carbon of fructose.

(B) ‘a’ carbon of glucose and ‘e’ carbon of fructose.

(C) ‘a’ carbon of glucose and ‘b’ carbon of fructose.

(D) ‘f’ carbon of glucose and ‘f ’ carbon of fructose.

Q.No. 12 Which of the following enhances leathering property of soap?

(A) Sodium carbonate

(B) Sodium rosinate
---

(C) Sodium stearate

(D) Trisodium phosphate

Q.No. 13 There are 14 elements in actinoid series. Which of the following elements does not belong to this
series ?

(A) U

(B) Np

(C) Tm

(D) Fm

Q.No. 14 In comparison to a 0.01 M solution of glucose, the depression in freezing point of a 0.01 M MgCl₂
solution is _____________.

(A) the same

(B) about twice

(C) about three times

(D) about six times

Q.No. 15 To get a n-type semiconductor from silicon, it should be doped with a substance with
valence__________.

(A) 2

(B) 1

(C) 3

(D) 5

Q.No. 16 Which of the following is an example of vic-dihalide?

(A) Dichloromethane

(B) 1,2-dichloroethane

(C) Ethylidene chloride

(D) Allyl chloride

Q.No. 17 From the given figure,For the reduction of FeO at the temperature corresponding to point D, which
of the following statements is correct?
---

(A) ∆G value for the overall reduction reaction with carbon monoxide is zero.

(B) ∆G value for the overall reduction reaction with a mixture of 1 mol carbon and 1 mol oxygen is positive

(C) ∆G value for the overall reduction reaction with a mixture of 2 mol carbon and 1 mol oxygen will be
positive.

(D) ∆G value for the overall reduction reaction with carbon monoxide is negative.

Q.No. 18 Benzylamine may be alkylated as shown in the following equation :
C s H s CH 2 NH 2 + R − X ⟶ C s H s CH 2 NHR

Which of the following alkylhalides is best suited for this reaction through SN 1 mechanism?

(A) CH Br 3

(B) C H Br
6 5

(C) C H CH Br
6 5 2

(D) C H Br
2 5

Q.No. 19 Which is the most suitable reagent for the following conversion?

(A) Tollen’s reagent

(B) Benzoyl peroxide

(C) I2 and NaOH solution

(D) Sn and NaOH solution

Q.No. 20 Maximum covalency of nitrogen is ______________.

(A) 3

(B) 5

(C) 4
---

(D) 6

Q.No. 21 The value of Henry’s constant KH is _____________.

(A) greater for gases with higher solubility.

(B) greater for gases with lower solubility.

(C) constant for all gases.

(D) not related to the solubility of gases.

Q.No. 22 The source of nitrogen in Gabriel synthesis of amines is _____________.

(A) Sodium azide, NaN₃

(B) Sodium nitrite, NaNO₂

(C) Potassium cyanide, KCN

(D) Potassium phthalimide, C₆H₄(CO)₂N⁻K⁺

Q.No. 23 Generally transition elements form coloured salts due to the presence of unpaired electrons. Which
of the following compounds will be coloured in solid state ?

(A) Ag₂SO₄

(B) CuF₂

(C) ZnF₂

(D) Cu₂Cl₂

Q.No. 24 Colligative properties depend on ____________.

(A) the nature of the solute particles dissolved in solution.

(B) the number of solute particles in solution.

(C) the physical properties of the solute particles dissolved in solution.

(D) the nature of solvent particles.

Q.No. 25 The magnetic nature of elements depends on the presence of unpaired electrons. Identify the
configuration of transition element, which shows the highest magnetic moment.

(A) 3d⁷

(B) 3d⁵

(C) 3d⁸

(D) 3d²

Q.No. 26 The commercial name of polyacrylonitrile is ______________.

(A) Dacron

(B) Orlon (acrilan)

(C) PVC
---

(D) Bakelite

Q.No. 27 Which of the following statements is not true about enzyme inhibitors?

(A) Inhibit the catalytic activity of the enzyme.

(B) Prevent the binding of substrate.

(C) Generally a strong covalent bond is formed between an inhibitor and an enzyme

(D) Inhibitors can be competitive or non-competitive.

Q.No. 28 Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated
sheet structure. α-helix structure of protein is stabilised by

(A) Peptide bonds

(B) van der Waals forces

(C) Hydrogen bonds

(D) Dipole-dipole interactions

Q.No. 29 Which is the correct increasing order of boiling points of the following compounds?
1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene

(A) Bromobenzene < 1-Bromobutane < 1-Bromopropane < 1-Bromoethane

(B) Bromobenzene < 1-Bromoethane < 1-Bromopropane < 1-Bromobutane

(C) 1-Bromopropane < 1-Bromobutane < 1-Bromoethane < Bromobenzene

(D) 1-Bromoethane < 1-Bromopropane < 1-Bromobutane < Bromobenzene

Q.No. 30 The correct decreasing order of basic strength of the following species is _______.
− −
H 2 O, NH 3 , OH , NH 2

(A) NH −

2
> OH
−
> NH 3 > H 2 O

(B) OH − −
> NH 2 > H 2 O > NH 3

(C) NH 3 > H 2 O > NH
−

2
> OH
−

(D) H O > NH
2 3
> OH
−
> NH
−
2

Q.No. 31 When KMnO₄ solution is added to oxalic acid solution, the decolourisation is slow in the
beginning but becomes instantaneous after some time because

(A) CO₂ formed as the product.

(B) Reaction is exothermic

(C) MnO₄⁻ catalyses the reaction

(D) Mn₂₊ acts as autocatalyst.

Q.No. 32 The cell constant of a conductivity cell _____________.

(A) changes with change of electrolyte.
---

(B) changes with change of concentration of electrolyte.

(C) changes with temperature of electrolyte

(D) remains constant for a cell. CUET 2023
Q.No. 33 What is the coordination number in a square close packed structure in two dimensions?

(A) 2

(B) 3

(C) 4

(D) 6

Q.No. 34 Extent of adsorption of adsorbate from solution phase increases with ________.

(A) increase in amount of adsorbate in solution.

(B) decrease in surface area of adsorbent.

(C) increase in temperature of solution

(D) decrease in amount of adsorbate in solution.

Q.No. 35 Which of the following will not enhance nutritional value of food?

(A) Minerals

(B) Artificial sweeteners

(C) Vitamins

(D) Aminoacids

Q.No. 36 The correct order of increasing acidic strength is _____________.

(A) Phenol < Ethanol < Chloroacetic acid < Acetic acid

(B) Ethanol < Phenol < Chloroacetic acid < Acetic acid

(C) Ethanol < Phenol < Acetic acid < Chloroacetic acid

(D) Chloroacetic acid < Acetic acid < Phenol < Ethanol

Q.No. 37 Which of the following statements is correct?

(A) The rate of a reaction decreases with passage of time as the concentration of reactants dereases.

(B) The rate of a reaction is same at any time during the reaction.

(C) The rate of a reaction is independent of temperature change

(D) The rate of a reaction decreases with increase in concentration of reactant(s).
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Q.No. 38 Arrange the following compounds in the increasing order of their densities.

(A) (a) < (b) < (c) < (d)

(B) (a) < (c) < (d) < (b)

(C) (d) < (c) < (b) < (a)

(D) (b) < (d) < (c) < (a)

Q.No. 39 On addition of conc. H₂SO₄ to a chloride salt, colourless fumes are evolved but in case of iodide
salt, violet fumes come out. This is because

(A) H₂SO₄ reduces HI to I₂

(B) HI is of violet colour

(C) HI gets oxidised to I₂

(D) HI changes to HIO₃

Q.No. 40 In which of the following molecules carbon atom marked with asterisk (*) is asymmetric?

(A) (a), (b), (c), (d)

(B) (a), (b), (c)

(C) (b), (c), (d)

(D) (a), (c), (d)

Answer Sheet
Q.No Answer

Q.No. 1 (D)
Q.No. 2 (D)
Q.No. 3 (B)
Q.No. 4 (D)
Q.No. 5 (C)
Q.No. 6 (D)
Q.No. 7 (B)
---

Q.No. 8 (D)
Q.No. 9 (A)
Q.No. 10 (C)
Q.No. 11 (C)
Q.No. 12 (B)
Q.No. 13 (C)
Q.No. 14 (C)
Q.No. 15 (D)
Q.No. 16 (B)
Q.No. 17 (A)
Q.No. 18 (C)
Q.No. 19 (C)
Q.No. 20 (C)
Q.No. 21 (B)
Q.No. 22 (D)
Q.No. 23 (B)
Q.No. 24 (B)
Q.No. 25 (B)
Q.No. 26 (B)
Q.No. 27 (C)
Q.No. 28 (C)
Q.No. 29 (D)
Q.No. 30 (A)
Q.No. 31 (D)
Q.No. 32 (D)
Q.No. 33 (C)
Q.No. 34 (A)
Q.No. 35 (B)
Q.No. 36 (C)
Q.No. 37 (A)
Q.No. 38 (A)

Q.No. 39 (C)
Q.No. 40 (B)
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