The CUET Chemistry 2025 exam took place between 13th May and 3rd June, with the question paper, answer key, and solutions are available for download. The topics included organic, inorganic, and physical chemistry, chemical reactions, bonding, and practical applications.
There were 50 questions to be solved in 60 minutes, and the paper was worth 250 marks. The scoring scheme included +5 marks for each correct answer and –1 mark for each incorrect answer.
CUET UG Chemistry 2025 Question Paper with Solutions PDF
| CUET UG Chemistry Question Paper with Solutions PDF | Download PDF | Check Solutions |
The value of van't Hoff factor, i, for CH₃COOH solution in water will be
The following solutions were prepared by dissolving 1 g of solute in 1 L of the solution. Arrange the following solutions in decreasing order of their molarity:
Match List-I with List-II
| Solutions | Explanation |
| (A) Saturated solution |
(I) Solution having two components. |
| (B) Isotonic solutions | (II) A solution whose osmotic pressure is more than that of another. |
| (C) Binary solution | (III) A solution which contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature. |
| (D) Hypertonic solution | (IV) The solutions having the same osmotic pressure at a given temperature. |
Give the reason for low concentration of oxygen in the blood and tissues of people living at high altitude.
Calculate the molality of KI if the density of 20% (mass/mass) aqueous solution of KI is 1.202 g mL\(^{-1}\).
(Molar mass of KI is 166 g mol\(^{-1}\))
The unit of \( E_{cell} \) is
The following statements describe various properties of a Mercury cell:
Which cell is used in automobiles and inverters?
A galvanic cell behaves as an electrolytic cell when?
Which of the following does not represent a correct application of the coordination compound?
Arrange the following ions in increasing order of number of 3d-electrons:
The atomic number of Lanthanum is 57. Its electronic configuration will be ......
What is the color of Fe\(^{3+}\)(aq) ion?
Why is HCl not used to make the medium acidic in oxidation reactions of KMnO\(_4\) in acidic medium?
Acidified potassium dichromate oxidizes sulphides (S\(^{2-}\)) to .......
What is the decreasing order of field strength of given ligands?
What is the IUPAC name of [Pt(NH\(_3\))\(_2\)Cl\(_2\)]?
Select the correct statements for [Fe(CN)\(_6\)]\(^{3-}\) complex:
Match List-I with List-II
| List – I | List – II |
| (A) Ambient nucleophiles | (I) Symmetrical object |
| (B) Plane polarized light | (II) Saytzeff rule |
| (C) Superimposable mirror image | (III) Cyanides and nitriles |
| (D) \(\beta\)-elimination reaction | (IV) Nicol Prism |
Optically active alkyl halide undergoing S\(_N\)2 substitution involves
Gabriel phthalimide synthesis is used for the preparation of
The above reaction is an example of
The reagent(s) used in hydroboration oxidation of propene are:
The carbohydrate used as a storage molecule in plants is
*****-Volhard Zelinsky reaction is used for the formation of
What is the correct sequence of increasing reactivity of the following compounds towards nucleophilic addition reaction?
Which of the following reagents is required for the conversion of Benzene to methyl benzoate?
Which reagent will distinguish Benzophenone from acetone?
The structural feature in carbonyl compound for Aldol condensation is:
The nitrogen atom in amines is trivalent and possess an unshared pair of electrons. The geometry of trimethyl amine is:
What happens when C₆H₅–O–R is treated with HX?
In the nitration of benzene using a mixture of conc. H₂SO₄ and conc. HNO₃, the nitrating species is:
Which of the following compounds will not give azo coupling reaction with benzene diazonium chloride?
Amylose is a water-soluble part of starch. What is the percentage solubility of it?
What is an example of globular protein?
Which types of bonds or interactions are found in the \(\beta\)-helix of protein?
Match the amino acid given in List-I with their one-letter code given in List-II
Arrange the following compounds in increasing order of their acidic strength:
Read the passage carefully and answer the questions.
The speed at which a chemical reaction takes place is called the rate of reaction. The rate of reaction depends on various factors like concentration of the reactants, temperature, etc. The relation between the rate of reaction and the concentration of reacting species is represented by the equation \( r = k[A]^x[B]^y \), where x and y are the order of the reaction with respect to the reactants A and B, respectively. The overall order of the reaction is x + y. The rate of reaction can also be increased by the use of a catalyst which provides an alternate pathway of lower activation energy. It increases the rate of forward and backward reactions to an equal extent. It does not alter the Gibbs energy of the reaction.
Question 41:
The rate of a gaseous reaction is given by \( r = k[A]^x[B]^y \). If the volume of the reaction vessel is suddenly reduced to \( \frac{1}{4} \)th of its initial value, the reaction rate relating to the initial rate will become
Calculate the order of a reaction whose Rate = \( k [A]^{1/2} [B]^{3/2} \).
The rate law of a reaction is given by \( r = k[CH_3OCH_3]^{3/2} \). If the pressure is measured in bar and time in minutes, then the unit of rate constant will be:
If the rate of reaction becomes twenty-seven times upon increasing the concentration of reactant by three times, the order of this reaction is
The role of a catalyst is to change:
Read the passage carefully and answer the questions.
Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson’s synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson’s synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
Question 46:
When ethanol is dehydrated in the presence of \( H_2SO_4 \) at 443K and 413K respectively, the products formed are:
The major product in the reaction of anisole with bromine in ethanoic acid is:
In Williamson synthesis, the alkoxide ion attacks the alkyl halide via which pathway?
Which is the most reactive hydrogen halide for cleavage of ethers?
Which type of ether is anisole?
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