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JEE Chemistry PYQ — Organic & Physical Chemistry
JEE Chemistry • 10 questions • Free on ExamBattle
Practice Questions
Q1
[JEE Mains 2023] The IUPAC name of CH₃-CH(OH)-CH₂-CH₃ is:
- A. 2-butanol
- B. 3-butanol
- C. 1-butanol
- D. 2-methylpropanol
Q2
[JEE Mains 2022] How many moles of KMnO₄ are needed to react with 1 mole of FeSO₄ in acidic medium? (MnO₄⁻ + Fe²⁺ → Mn²⁺ + Fe³⁺)
- A. 1/5
- B. 1
- C. 5
- D. 1/2
Q3
[JEE Mains 2023] At equilibrium, for the reaction N₂ + 3H₂ ⇌ 2NH₃, if [N₂] = 1 M, [H₂] = 3 M, [NH₃] = 0.5 M, then Kc is:
- A. 0.00925
- B. 0.25
- C. 0.5
- D. 0.0308
Q4
[JEE Mains 2022] Which of the following has the highest electronegativity?
- A. O
- B. F
- C. Cl
- D. N
Q5
[JEE Mains 2021] In SN2 reaction, the nucleophile attacks from:
- A. Same side as leaving group
- B. Opposite side to leaving group
- C. Any direction
- D. Axial direction only
Q6
[JEE Mains 2023] For which of the following is ΔH = ΔU?
- A. H₂(g) + Cl₂(g) → 2HCl(g)
- B. N₂(g) + 3H₂(g) → 2NH₃(g)
- C. PCl₅(g) → PCl₃(g) + Cl₂(g)
- D. CaCO₃(s) → CaO(s) + CO₂(g)
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