Title 12. ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES 2.pdf ✅

1 JEE Advanced (2024) General Organic Chemistry CHEMISTRY Only One Option Correct Type Question (1-9) 1. The correct order of acid strength of the following carboxylic acids is [Inductive effect] (A) (I) > (III) > (II) > (IV) (B) (III) > (II) > (I) > (IV) (C) (II) > (I) > (IV) > (III) (D) (I) > (II) > (III) > (IV) 2. The correct order of acidity for the following compounds is [Inductive] (A) I > II > III > IV (B) III > I > II > IV (C) III > IV > II > I (D) I > III > IV > II 3. The most unlikely representation of resonance structures of p–nitrophenoxide ion is [Resonance] (A) (B) (C) (D) 4. Among the following compounds, the strongest acid is [Inductive effect] (A) HC ≡ CH (B) C6H6 (C) C2H6 (D) CH3OH 5. Which will be the least stable resonating structure? [Resonance] (A) (B) (C) (D) 6. Which of the following has longest C–O bond? [Hyperconjugation] (A) (B) (C) (D) 7. The correct stability order of following species is: [Hyperconjugation] (X) (Y) (Z) (W) (A) X > Y > W > Z (B) Y > X > W > Z (C) X > W > Z > Y (D) Z > X > Y > W 8. Arrange the following acids in decreasing order of acidity: [Inductive effect] (X) (Y) (Z) (A) X > Z > Y (B) X > Y > Z (C) Z > X > Y (D) Z > Y > X Practice Sheet
2 9. Which of the following reactions does not proceed in forward direction? [Acidity & basicity] (A) Ph3C–H + CH3(CH2)3Na —→ Ph3CNa + CH3(CH2)2CH3 (B) (C) (D) One Or More Than One Correct Type Question (10-14) 10. Which of the following compounds would exhibit aromatic properties? [Aromaticity] (A) (B) (C) (D) 11. Which of the following aromatic rings have greater electron density than ? [Aromaticity] (A) (B) (C) (D) 12. Which of the following compounds contain more acidic hydrogen than hydrogen of [Inductive effect] (A) (B) (C) (D) 13. Which of these statements are correct? [Aromativity] (A) 1, 3, 5-cycloheptatriene is not acidic while 1, 3-cyclopentadiene is acidic in nature (B) p-chlorophenol is less acidic than p- fluorophenol (C) Dipole moment of is greater than (D) Mesomeric effect is temporary effect 14. Which of the following compounds will create electron at ortho and para greater than [Resonance] (A) (B) (C) (D)
3 Numerical Answer Type Question (15-19) 15. The purine heterocycle occurs mainly in the structure of DNA. Identify number of ‘N’ atoms having localised lone pair of electron. [Resonance] (purine) 16. Find out number of compounds which are more stabilise in ionic structure, from following. [Aromaticity] 17. Find out number of compounds which are more acidic than benzoic acid, from following. [Inductive effect] 18. Identify number of compounds from following. Which liberate CO2 on reaction with NaHCO3. [Acidity & basicity] 19. How many compounds from following exhibit d-orbital resonance. [Resonance]
4 ANSWER KEY 1. ( D ) 2. ( A ) 3 . ( B ) 4 . ( D ) 5 . ( C ) 6 . ( B ) 7 . ( C ) 8 . ( A ) 9 . ( D ) 10 . (A, B, C ) 11 . (A, C, D ) 12 . (A, D ) 13 . (A, C ) 14 . (A, B, C ) 1 5 . ( 3 ) 1 6 . ( 3 ) 1 7 . ( 4 ) 1 8 . ( 5 ) 1 9 . ( 4 )