JEE Main Past Paper Practice Questions PDF
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This document contains a set of practice questions from the JEE Main exam archive. Topics covered include oxygen-containing organic compounds.
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Date Planned : __ / __ / __ Daily Tutorial Sheet-1 Expected Duration : 45 Min Actual Date of Attempt : __ / __ / __ JEE Main (Archive) Exact Duration :_________ 1. The reagent with which both acetaldehyde and acet...
Date Planned : __ / __ / __ Daily Tutorial Sheet-1 Expected Duration : 45 Min Actual Date of Attempt : __ / __ / __ JEE Main (Archive) Exact Duration :_________ 1. The reagent with which both acetaldehyde and acetone react easily is : (1981) (A) Tollen’s reagent (B) Schiff’s reagent (C) Grignard’s reagent (D) Fehling’s reagent 2. Which of the following has the most acidic hydrogen? (2000) (A) 3-hexanone (B) 2, 4-hexanedione (C) 2, 5-hexanedione (D) 2, 3-hexanedione 3. A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives : (2001) (A) Benzyl alcohol and sodium formate (B) Sodium benzoate and methyl alcohol (C) Sodium benzoate and sodium formate (D) Benzyl alcohol and methyl alcohol 4. The order of reactivity of phenyl magnesium bromide with the following compounds is : (2004) (A) (II) > (III) > (I) (B) (I) > (III) > (II) (C) (II) > (I) > (III) (D) All of these 5. Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is : (2007) (A) (B) (C) (D) OH 6. PhCH2OH PhCO2 the slowest step is : In the Cannizzaro reaction given below, 2PhCHO (A) The attack of OH at the carbonyl group (2009) (B) The transfer of hydride to the carbonyl group (C) The abstraction of proton from the carboxylic acid (D) The deprotonation of PhCH2OH 7. Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the products contains sodium trichloroacetate ion and another compound. The other compound is: (2011) (A) 2, 2, 2-trichlorehanol (B) trichloromethanol (C) 2, 2, 2-trichloropropanol (D) chloroform 8. The most suitable reagent for the conversion of R CH2 OH R CHO is : (2014) (A) KMnO4 (B) K 2Cr 2O7 (C) CrO3 (D) PCC (pyridinium chlorochromate) NaBH 4 PCl5 Alc. KOH 9. In the reaction, CH3CHO A C. The product C is : B (2014) H2 O (A) ethyl alcohol (B) acetylene (C) ethylene (D) acetyl chloride JEE Main (Archive) | DTS-1 149 Oxygen Containing Organic Compounds-II 10. Which compound would give 5-keto-2-methyl hexanal upon ozonolysis ? (2015) (A) (B) (C) (D) 11. A compound A with molecular formula C10H13Cl gives a white precipitate on adding silver nitrate solution. A on reacting with alcoholic KOH gives compound B as the main product. B on ozonolysis gives C and D. C gives Cannizzoro's reaction but not aldol condensation. D gives aldol condensation but not Cannizzoro's reaction. A is : (2015) (A) (B) C 6 H5 CH2 CH2 CH CH3 | Cl (C) C6H5 CH2 CH2 CH2 CH2 Cl (D) OH 12. In the reaction 2 CH3CHO B; the product B is : A (2015) (A) CH3 CH2 CH2 CH2 OH (B) CH3 CH CH CHO O || (C) CH3 C CH3 (D) CH3 CH2 CH2 CH3 4 KMnO 2 2 SOCl H /Pd 13. In the following sequence of reactions Toluene A B C , the product C BaSO4 is: (2015) (A) C6H5COOH (B) C6H5CH3 (C) C6H5CH2OH (D) C6H5CHO 14. The major product obtained in the following reaction is : (2017) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 150 Oxygen Containing Organic Compounds-II 15. The correct sequence of reagents for the following conversion will be : (2017) (A) Ag NH 3 2 OH , CH3MgBr, H / CH3OH (B) Ag NH 3 2 OH , H / CH3OH, CH 3MgBr (C) CH3MgBr, H / CH3OH, Ag NH3 2 OH (D) CH 3MgBr, Ag NH3 2 OH , H / CH 3OH 16. Major products of the following reactions are: (2019) (A) CH3OH and HCO2H (B) (C) (D) 17. The major product of the following reaction is : (2019) (A) (B) (C) (D) 18. The major product ‘Y’ in the following reaction is: (2019) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 151 Oxygen Containing Organic Compounds-II 19. Compound A(C9H10O) shows positive iodoform test. Oxidation of A with KMnO4 / KOH gives acid B(C8H6O4 ). Anhydride of B is used for the preparation of phenolphthalein. Compound A is: (2019) (A) (B) (C) (D) HCl 20. In the following reaction, carbonyl compound MeOH acetal. Rate of the reaction is the highest for: (2019) (A) Acetone as substrate and methanol in excess (B) Propanal as substrate and methanol in excess (C) Propanal as substrate and methanol in stoichiometric amount (D) Acetone as substrate and methanol in stoichiometric amount 21. Which of the following compounds will show the maximum ‘enol’ content? (2019) (A) CH3COCH2COCH3 (B) CH3COCH2CONH2 (C) CH3COCH2COOC2H5 (D) CH3COCH3 22. The major product obtained in the following reaction is : (2019) (A) (B) (C) (D) 23. The major product of the following reaction is : (2019) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 152 Oxygen Containing Organic Compounds-II 24. The major product formed in the following reaction is : (2019) (A) (B) (C) (D) 25. The tests performed on compound X and their inference are : (2019) Test Inference (a) 2, 4-DNP test Coloured precipitate (b) Iodoform test Yellow precipitate (c) Azo-dye test No dye formation Compound 'X' is : (A) (B) (C) (D) 26. The major product obtained in the following reaction is : (2019) (A) (B) (C) (D) 27. The major product of the following reaction is : (2019) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 153 Oxygen Containing Organic Compounds-II 28. The major product of the following reaction is : (2019) (A) (B) (C) (D) 29. In the following reactions, products A and B are : (2019) (A) (B) (C) (D) 30. Among the following four aromatic compounds, which one will have the lowest melting point ? (2019) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 154 Oxygen Containing Organic Compounds-II 31. The aldehydes which will not form Grignard product with one equivalent Grignard reagents are : (2019) (A) (B) (C) (D) (A) (C), (D) (B) (B), (C), (D) (C) (B), (C) (D) (B), (D) HCl 32. In the following reaction, Aldehyde Alcohol Acetal (2019) Aldehyde Alcohol t HCHO BuOH CH3 CHO MeOH The best combination is: (A) HCHO and MeOH (B) CH3CHO and t BuOH (C) HCHO and t BuOH (D) CH3CHO and MeOH 33. The major product of the following reaction is : (2019) (A) (B) (C) (D) 34. The major product ‘X’ formed in the following reaction is : (2019) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 155 Oxygen Containing Organic Compounds-II 35. The major product the following reaction : (2019) (i) KMnO / KOH, 4 (ii) H2 SO4 (dil) (A) (B) (C) (D) 36. The major product in the following conversion is : (2019) (A) (B) (C) (D) 37. The major product of the following reaction is : (2019) 2(i) Ni/H (ii) DIBAL H (A) (B) (C) (D) JEE Main (Archive) | DTS-1 156 Oxygen Containing Organic Compounds-II 38. An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation, and also 3 O [ Ag(NH ) ] 3 2 gives following reaction X A B(3-oxo-hexanedicarboxylic acid) X will be: Zn/H2O (A) (B) (C) (D) (2020) 39. In the following reaction A is : (2020) (A) (B) (C) (D) 40. The major products of the following reactions are: (2019) (A) (B) (C) (D) JEE Main (Archive) | DTS-1 157 Oxygen Containing Organic Compounds-II
