Practice Questions

Q46.Identify the major products A and B respectively in the following reactions of phenol (1) (2) (3) (4)

Q46. Considering the above chemical reaction, identify the product X : (1) (2) (3) (4)

Q46.Which one of the following compounds will give orange precipitate when treated with 2, 4 −dinitrophenyl hydrazine ? (1) (2) (3) (4)

Q46.The major product of the following reaction is: (1) (2) (3) (4)

Q46.Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion. Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product. In the light of the above statements, choose the most appropriate answer from the options given below : (1) Both Statement I and Statement II are false. (2) Both Statement I and Statement II are true. (3) Statement I is false but Statement II is true. (4) Statement I is true but Statement II is false.

Q47.The structures of A and B formed in the following reaction are : Ph = - C6H5 JEE Main 2021 (31 Aug Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47. Hydrolysis−A → B (C4H8 Cl2) 373 K (C4H8O) B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B. (1) 2, 2 -Dichlorobutane and Butanal (2) 2, 2 -Dichlorobutane and Butan- 2 -one (3) 1, 1 -Dichlorobutane and 2-Butanone (4) 1, 1 -Dichlorobutane and Butanal JEE Main 2021 (26 Feb Shift 1) JEE Main Previous Year Paper

Q47.A and B in the following reactions are: (1) (2) (3) (4)

Q47.Ceric ammonium nitrate and CHCl3 / alc. KOH are used for the identification of functional groups present in _ and _ respectively. (1) amine, phenol (2) alcohol, amine (3) amine, alcohol (4) alcohol, phenol

Q47.Compound A is converted to B on reaction with CHCl3 and KOH. The compound B is toxic and can be decomposed by C. A, B and C respectively are: (1) primary amine, nitrile compound, conc. HCl (2) secondary amine, isonitrile compound, conc. NaOH (3) primary amine, isonitrile compound, conc. HCl (4) secondary amine, nitrile compound, conc. NaOH

Q47.In the following sequence of reactions a compound A, (molecular formula C6H12O2 ) with a straight chain structure gives a C4 carboxylic acid. A is : Oxidation 𝐴LiAlH4 𝐵 ⟶ C4 - carboxylic acid H3O+ (1) (2) (3) (4)

Q47.Which one of the following is the major product of the given reaction? JEE Main 2021 (27 Aug Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.Which one of the following compounds will liberate CO2, when treated with NaHCO3 ? (1) ⊕ ⊝ (2) ⊕ ⊝ CH33 NH Cl CH34 N OH (3) (4) CH3NH2

Q47.The major products A and B in the following set of reactions are: (1) (2) (3) (4)

Q47.The major product of the following reaction is : H2/ CO −CH3 CH2 CH = CH2 → Rh catalyst (1) CH3 CH2 CH = CH −CHO (2) CH3 CH2 CH2 CH2 CHO (3) CH3 CH2 CH2 CHO (4)

Q47. Considering the above reaction, X and Y respectively are: JEE Main 2021 (18 Mar Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47. In the above chemical reaction, intermediate " X" and reagent/condition " A" are : (1) (2) (3) (4)

Q47.Which one of the following reactions will not form acetaldehyde? CrO3−H2 SO4 (1) (2) CH2 = CH2 + O2 Pd(II)/H2OCu(II)− → CH3 CH2 OH > (4) CH3 CH2 OH 573CuK > (3) CH3 CN i) DIBAL−Hii )H2O

Q47.In the reaction of hypobromite with amide, the carbonyl carbon is lost as: (1) CO2−3 (2) HCO−3 (3) CO2 (4) CO

Q47.The diazonium salt of which of the following compounds will form a coloured dye on reaction with β - Naphthol in NaOH? (1) (2) (3) (4)

Q47. Consider the above reaction and identify the Product P : JEE Main 2021 (27 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.An organic compound A(C6H6O) gives dark green colouration with ferric chloride. On treatment with CHCl3 and KOH, followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with pyridinium chlorochromate (PCC). Identify A, B and C. (1) (2) (3) (4)

Q47.The major products formed in the following reaction sequence A and B are: JEE Main 2021 (26 Aug Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.The number of stereoisomers possible for 1, 2 -dimethyl cyclopropane is: (1) Two (2) One (3) Four (4) Three

Q47. Consider the above reaction, the Product "P" is : (1) (2) (3) (4)