CUET 2026 Chemistry Mock Test 1

Questions in this Chemistry paper

Preview all 10 questions below. Attempt the test to check your answers, see your score and review the solution for each question.

1. A compound A having molecular formula C7H8O gives a violet colour with neutral FeCl3. On treatment with excess CH3I/K2CO3, it forms compound B. Ozonolysis of B followed by reductive workup (Zn/H2O) gives one mole of methanal and one mole of anisaldehyde. The number of phenolic compounds among A, B, and the ozonolysis products is:

   • A0
   • B1
   • C2
   • D3

2. Aldehyde A undergoes Cannizzaro reaction to give compounds B and C. Compound B on oxidation gives benzoic acid. Compound C gives positive iodoform test after suitable oxidation. Compound A is:

   • ABenzaldehyde
   • BFormaldehyde
   • CAcetaldehyde
   • DPropanal

3. The molar conductivity of CH3COOH at a certain concentration is 39.0 Ω⁻¹ cm² mol⁻¹. Given that the limiting molar conductivities are Λ°m(HCl) = 426.0 Ω⁻¹ cm² mol⁻¹, Λ°m(CH3COONa) = 91.0 Ω⁻¹ cm² mol⁻¹ and Λ°m(NaCl) = 126.0 Ω⁻¹ cm² mol⁻¹. The degree of dissociation of acetic acid at this concentration is:

   • A0.25
   • B0.40
   • C0.50
   • D0.60

4. For the cell reaction Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s), the standard cell potential is 1.10 V. If [Zn²⁺] = 0.10 M and [Cu²⁺] = 1.0 × 10⁻³ M at 298 K, the cell potential is closest to:

   • A0.98 V
   • B1.04 V
   • C1.16 V
   • D1.22 V

5. A first-order reaction has a rate constant of 2.0 × 10⁻³ s⁻¹ at 300 K and 8.0 × 10⁻³ s⁻¹ at 330 K. Assuming the Arrhenius equation to be valid, the activation energy of the reaction is closest to:

   • A28.5 kJ mol⁻¹
   • B38.0 kJ mol⁻¹
   • C57.0 kJ mol⁻¹
   • D76.0 kJ mol⁻¹

6. A coordination compound has the formula [Co(NH3)4Cl2]Cl. The magnetic moment of the complex is found to be approximately 4.9 BM. The hybridization and geometry of the complex ion are respectively:

   • Adsp², square planar
   • Bsp³, tetrahedral
   • Cd²sp³, octahedral
   • Dsp³d², octahedral

7. EDTA forms a stable complex with a metal ion M³⁺. The complex formed is octahedral and represented as [M(EDTA)]⁻. Which of the following statements is correct?

   • AEDTA acts as a tetradentate ligand and the complex shows geometrical isomerism only
   • BEDTA acts as a hexadentate ligand and the complex can show optical isomerism
   • CEDTA acts as a bidentate ligand and the complex shows linkage isomerism
   • DEDTA acts as a monodentate ligand and the complex is tetrahedral

8. Which of the following statements regarding lanthanoids is correct?

   • ABasicity of lanthanoid hydroxides increases from La(OH)3 to Lu(OH)3
   • BLanthanoid contraction occurs because of poor shielding by 4f-electrons
   • CCe⁴⁺ is less stable than Ce³⁺ because of its noble gas configuration
   • DAtomic size increases regularly from La to Lu

9. Phenol is subjected to the following sequence of reactions: Phenol →(NaOH, CO₂) A →(H⁺) B →(Conc. HCl, Zn(Hg)) C →(NH₂NH₂/KOH, Δ) D. If A is formed via Kolbe–Schmitt reaction and the final product D is obtained after the given sequence, then D is:

   • ABenzene
   • BToluene
   • CCyclohexane
   • DPhenol

10. Consider the following statements regarding carbohydrates. Assertion (A): Sucrose is a non-reducing sugar. Reason (R): In sucrose, both the anomeric carbon atoms of glucose and fructose participate in glycosidic bond formation. Choose the correct option.

    • ABoth Assertion and Reason are true, and Reason is the correct explanation of Assertion
    • BBoth Assertion and Reason are true, but Reason is not the correct explanation of Assertion
    • CAssertion is true, but Reason is false
    • DAssertion is false, but Reason is true