CUET Chemistry Question Paper 2024 SET C (Available)- Download Solutions and Answer Key pdf

Chlorine is an electron withdrawing group, yet it is ortho- and para-directing in electrophilic aromatic substitution reactions because:

1. Chlorine withdraws electrons through inductive effect.
2. Chlorine destabilizes the intermediate carbocation formed during electrophilic substitution.
3. Chlorine accepts electrons through resonance.
4. Chlorine releases electrons through resonance.

In the Etard reaction, the final product is:

1. Aromatic aldehyde
2. Aromatic chloride
3. Aromatic amine
4. Aromatic alcohol

Aniline does not undergo Friedel-Crafts reaction because:

1. It forms salt with the Lewis acid catalyst, AlCl₃.
2. Nitrogen of aniline acquires a negative charge.
3. Nitrogen of aniline acquires a positive charge.
4. Nitrogen acts as a strong deactivating group in the further reaction.

Match List-I with List-II:

List-I
(A) Amino acids linked in a specific sequence
(B) Regular folding of a specific sequence of amino acids due to H-bonding
(C) Fibrous proteins
(D) Spatial arrangement of two or more polypeptide chains

List-II
(I) Primary structure of proteins
(II) Secondary structure of proteins
(III) Quaternary structure of proteins
(IV) Tertiary structure of proteins

1. (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
2. (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
3. (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
4. (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Match List-I with List-II:

List-I
(A) Tollen's reagent
(B) Jones reagent
(C) Lucas reagent
(D) Fehling solution

List-II
(I) Rochelle salt
(II) Conc. HCl and ZnCl₂
(III) Ammoniacal silver nitrate
(IV) Chromium trioxide-sulphuric acid

1. (A) - (III), (B) - (IV), (C) - (II), (D) - (I)
2. (A) - (IV), (B) - (III), (C) - (I), (D) - (II)
3. (A) - (I), (B) - (IV), (C) - (II), (D) - (III)
4. (A) - (III), (B) - (I), (C) - (IV), (D) - (II)

Match List-I with List-II:

List-I
(A) Swarts Reaction
(B) Finkelstein reaction
(C) Sandmeyer’s reaction
(D) Wurtz reaction

List-II
(I) C₆H₅NH₂ + NaNO₂ + HX + Cu₂X₂ → C₆H₅X + N₂
(II) 2RX + 2Na → R – R + 2NaX
(III) RX + AgF → R – F + AgX
(IV) RX + NaI → R – I + NaX

1. (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
2. (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
3. (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
4. (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Match List-I with List-II:

List-I
(A) Vitamin A
(B) Thiamine
(C) Glucocorticoids
(D) Estradiol

List-II
(I) Menstrual cycle
(II) Xerophthalmia
(III) Beri-Beri
(IV) Addison's disease

1. (A) - (III), (B) - (II), (C) - (I), (D) - (IV)
2. (A) - (II), (B) - (III), (C) - (I), (D) - (IV)
3. (A) - (III), (B) - (II), (C) - (IV), (D) - (I)
4. (A) - (II), (B) - (III), (C) - (IV), (D) - (I)

In the following table, match the reactants given in List-I with the correct product in List-II as per the reaction of hydration of alkene under acidic condition:

List-I (Reactants)
(A) [Reactant 1]
(B) [Reactant 2]
(C) [Reactant 3]
(D) [Reactant 4]

List-II (Products)
(I) [Product 1]
(II) [Product 2]
(III) [Product 3]
(IV) [Product 4]

1. (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
2. (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
3. (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
4. (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Which among the following is not an Analgesic?

1. Morphine
2. Heroin
3. Codeine
4. Ranitidine

The increasing order of acidity of the following compounds based on pKa values is:

(A) BrCH₂COOH
(B) ClCH₂COOH
(C) FCH₂COOH
(D) HCOOH

1. (D) < (A) < (B) < (C)
2. (A) < (D) < (C) < (B)
3. (B) < (A) < (D) < (C)
4. (C) < (B) < (D) < (A)

For SN2 reaction, the increasing order of the reactivity of the following alkyl halides is:

1. (A) CH₃CH₂CH₂CH₂Br
2. (B) CH₃CH₂CH(Br)CH₃
3. (C) (CH₃)₃CBr
4. (D) (CH₃)₂CHCH₂Br

The number of moles of hydrogen oxidised is:

1. 0.33 moles
2. 33.3 moles
3. 3.0 moles
4. 1.33 moles

The number of moles of electrons produced in the oxidation of 67.2 L of H₂ at STP is:

1. 2 moles
2. 4 moles
3. 1 mole
4. 6 moles

The quantity of electricity produced in the oxidation of 67.2 L of H₂ at STP is:

1. 96500 C
2. 579000 C
3. 193000 C
4. 48250 C

If the entire current produced is used for the electrodeposition of Silver (at.wt. 108 g mol^-1) from Silver (I) solution, the amount of silver deposited will be:

1. 324 g
2. 648 g
3. 108 g
4. 216 g

The source of electrical energy on the Apollo moon flight was:

1. Lead storage battery
2. A generator set
3. Ni-Cd cells
4. H₂-O₂ Fuel cell

Identify the incorrect statement.

1. Second ionisation enthalpy of Ag is greater than second ionisation enthalpy of Pd.
2. Zr and Hf share almost identical nuclear properties.
3. Melting point of Mn is lower than that of Cr.
4. Interstitial compounds are non-stoichiometric and neither ionic nor covalent in nature.

Which of the following is the correct order of second ionisation enthalpy?

1. V > Cr > Mn
2. V < Cr < Mn
3. V < Cr > Mn
4. V > Cr < Mn

Which of the following pair of compounds exhibits the same colour in aqueous solution?

1. FeCl₂, CuCl₂
2. VOCl₂, CuCl₂
3. VOCl₂, FeCl₂
4. VOCl₂, MnCl₂

Which metal has the highest oxidation state in the first row transition series?

1. Cr
2. Fe
3. Mn
4. V

Why do the actinoids exhibit a higher number of oxidation states than lanthanoids?

1. 4f orbitals are more diffused than the 5f orbitals.
2. Energy difference between 5f and 6d is less with respect to the energy difference between 4f and 5d.
3. Energy difference between 5f and 6d is more with respect to the energy difference between 4f and 5d.
4. Actinoids are more reactive in nature than the lanthanoids.

Camphor in nitrogen gas is a type of solution:

1. Gas – Gas
2. Solid – Gas
3. Liquid – Gas
4. Solid – Liquid

Identify the correct order of organic compounds in the following chemical reaction:

(A) CH₃MgBr
(B) CH₃Br
(C) CH₃Cl
(D) CH₄

1. (B), (A), (D), (C)
2. (A), (C), (B), (D)
3. (B), (A), (C), (D)
4. (C), (B), (D), (A)

Consider the following statements regarding osmotic pressure:

(A) Molar mass of a protein can be determined using osmotic pressure method.
(B) The osmotic pressure is proportional to the molarity.
(C) Reverse osmosis occurs when a pressure larger than osmotic pressure is applied to the concentrated solution side.
(D) Edema occurs due to retention of water in tissue cells as a result of osmosis.

1. (A), (B) and (D) only
2. (A), (B) and (C) only
3. (A), (B), (C) and (D)
4. (B), (C) and (D) only

Vapour pressures of pure liquids 'A' and 'D' at 50°C are 500 mm Hg and 800 mm Hg respectively. The binary solution of 'A' and 'D' boils at 50°C and 700 mm Hg pressure. The mole percentage of 'D' in the solution is:

1. 33.33 mole percent
2. 66.67 mole percent
3. 25.75 mole percent
4. 75.25 mole percent

For the following reaction:
2A₂ (g) + 1/4 X (g) → 2A₂X (g)
Volume is increased to double its value by decreasing the pressure on it. If the reaction is first order with respect to X and second order with respect to A₂, the rate of reaction will:

1. Decrease by eight times of its initial value
2. Increase by eight times of its initial value
3. Increase by four times of its initial value
4. Remain unchanged

The total number of sigma bonds present in P₄O₁₀ are:

1. 6
2. 7
3. 16
4. 17

In the electrolysis of alumina to obtain Aluminium metal, the cryolite is added mainly to:

1. Lower the melting point of alumina
2. Dissolve the alumina in the molten cryolite
3. Remove the impurities of alumina
4. Increase the electrical conductivity

Identify the order of reaction if its rate constant is k = 2 × 10⁻² s⁻¹:

1. Zero order
2. First order
3. Second order
4. Half order

For a complex reaction, the order of reaction is equal to:

1. Sum of stoichiometric coefficients in balanced chemical reaction
2. The molecularity of overall reaction
3. Order of fastest step of the reaction
4. The molecularity of slowest step of reaction

A molecule X associates in a given solvent as per the following equation:
X ⇌ (X)_n
For a given concentration of X, the van't Hoff factor was found to be 0.80 and the fraction of associated molecules was 0.3. The correct value of ‘n’ is:

1. 2
2. 3
3. 1
4. 5

The oxidation number of Co in complex [Co(H₂NCH₂CH₂NH₂)₃]₂(SO₄)₃ is:

1. 3
2. 4
3. 2
4. 5

The correct structure of dipeptide, Gly-Ala (glycyl alanine) is:

1. H₂N – CH₂ – CO – NH – CH(CH₃) – COOH
2. HOOC – CH₂ – NH – CO – CH(CH₃) – NH₂
3. HOOC – CH(CH₃) – NH – CO – CH₂ – NH₂
4. H₂N – CH(CH₃) – CO – NH – CH₂ – COOH

The total number of ions produced from the complex [Cr(NH₃)₆]Cl₃ in aqueous solution will be ________.

1. 2
2. 3
3. 4
4. 5

Arrange the following in decreasing order of number of molecules contained in:

(A) 16 g of O₂
(B) 16 g of CO₂
(C) 16 g of CO
(D) 16 g of H₂

1. (A), (B), (C), (D)
2. (D), (C), (A), (B)
3. (B), (A), (D), (C)
4. (C), (B), (D), (A)

The Cu metal crystallises into fcc lattice with a unit cell edge length of 361 pm. The radius of Cu atom is:

1. 127 pm
2. 181 pm
3. 157 pm
4. 108 pm

If 75% of a first order reaction gets completed in 32 minutes, time taken for 50% completion of this reaction is:

1. 16 minutes
2. 78 minutes
3. 8 minutes
4. 4 minutes

Which of the following compounds will be repelled when placed in an external magnetic field?

1. Na₂[CuCl₄]
2. Na₂[CdCl₄]
3. K₄[Fe(CN)₆]
4. K₃[Fe(CN)₆]

The spin-only magnetic moment of Hexacyanidomanganate(II) ion is ____________ BM.

1. 5.90
2. 1.73
3. 4.90
4. 3.87

The correct order of increasing boiling points of the following compounds is:

Pentan-1-ol, n-Butane, Pentanal, Ethoxyethane

1. Ethoxyethane, Pentanal, n-Butane, Pentan-1-ol
2. Pentanal, n-Butane, Ethoxyethane, Pentan-1-ol
3. n-Butane, Pentanal, Ethoxyethane, Pentan-1-ol
4. n-Butane, Ethoxyethane, Pentanal, Pentan-1-ol

In the following reaction, identify the product D:

C₆H₅OH + Zn → A → B → C → D

1. o-Nitrobenzoic acid
2. p-Nitrobenzoic acid
3. o,p-Dinitrobenzoic acid
4. m-Nitrobenzoic acid

The gold number range of some of the lyophilic colloids is given below:
A: 0.005 – 0.01, B: 0.15 – 0.25, C: 0.04 – 1.0, D: 15 – 25.
Which among these can be used as a better protective colloid?

1. A
2. B
3. C
4. D

Reaction of aniline with conc. HNO₃ and conc. H₂SO₄ at 298 K will produce 47% of:

1. p-Nitroaniline
2. o-Nitroaniline
3. m-Nitroaniline
4. 2,4-Dinitroaniline

What will be the increasing order of basic strength of the following compounds?
C₂H₅NH₂, (C₂H₅)₂NH, (C₂H₅)₃N, C₆H₅NH₂

1. C₂H₅NH₂ < (C₂H₅)₂NH < (C₂H₅)₃N < C₆H₅NH₂
2. C₆H₅NH₂ < C₂H₅NH₂ < (C₂H₅)₃N < (C₂H₅)₂NH
3. (C₂H₅)₃N < (C₂H₅)₂NH < C₆H₅NH₂ < C₂H₅NH₂
4. (C₂H₅)₂NH < (C₂H₅)₃N < C₂H₅NH₂ < C₆H₅NH₂

Which of the following compounds will give the Hell-Volhard-Zelinsky reaction?

1. R – CH₂ – COOH
2. R₃C – CHO
3. R₂CO
4. H – COOH

Arrange the following acids in increasing order of their acidic strengths:
HCOOH, FCH₂COOH, NO₂CH₂COOH, ClCH₂COOH

1. HCOOH < FCH₂COOH < NO₂CH₂COOH < ClCH₂COOH
2. HCOOH < NO₂CH₂COOH < ClCH₂COOH < FCH₂COOH
3. NO₂CH₂COOH < HCOOH < ClCH₂COOH < FCH₂COOH
4. HCOOH < ClCH₂COOH < FCH₂COOH < NO₂CH₂COOH

In the following compounds, what is the increasing order of their reactivity towards nucleophilic addition reactions?
Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone

1. Benzaldehyde < p-Tolualdehyde < p-Nitrobenzaldehyde < Acetophenone
2. Acetophenone < Benzaldehyde < p-Tolualdehyde < p-Nitrobenzaldehyde
3. Acetophenone < p-Tolualdehyde < Benzaldehyde < p-Nitrobenzaldehyde
4. Benzaldehyde < Acetophenone < p-Tolualdehyde < p-Nitrobenzaldehyde

The Gatterman-Koch reaction is used in the industrial preparation of benzaldehyde. The electrophile involved in this reaction is:

1. CO⁺
2. HCl + CO₂ + anhydrous AlCl₃
3. HCO⁺
4. CO + anhydrous AlCl₃

Formaldehyde undergoes Cannizzaro reaction because:

1. (B) and (D) only
2. (A) and (C) only
3. (B) and (C) only
4. (A) and (D) only

In the reaction, (CH₃)₃C – O – CH₃ + HI → Products, CH₃OH and (CH₃)₃CI are the products and not CH₃I and (CH₃)₃C – OH. It is because:

1. In step 2 of the reaction, the departure of leaving group (HO – CH₃) creates a less stable carbocation.
2. In step 2 of the reaction, the departure of leaving group (HO – CH₃) creates a more stable carbocation.
3. The reaction follows an SN1 mechanism.
4. The reaction follows an SN2 mechanism.