Practice Questions

Q46.Identify B formed in the reaction. excess NH3 NaOH Cl - CH24 - Cl → A → B + H2O + NaCl JEE Main 2024 (27 Jan Shift 2) JEE Main Previous Year Paper (1) (2) H2 N - CH24 - NH2 (3) + (4) -ClH3N+ - CH24 - NH3Cl-

Q46.Given below are two statements : Statement (I) : SN2 reactions are 'stereospecific', indicating that they result in the formation of only one stereo-isomer as the product. Statement (II) : SN1 reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below : (1) Both Statement I and Statement II are false (2) Statement I is false but Statement II is true (3) Statement I is true but Statement II is false (4) Both Statement I and Statement II are true

Q46.The correct order of reactivity in electrophilic substitution reaction of the following compounds is: (1) B > C > A > D (2) D > C > B > A (3) A > B > C > D (4) B > A > C > D

Q46.The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and M is metal) involves sp3 hybridization. The number of geometrical isomers exhibited by the complex is: (1) 2 (2) 0 (3) 4 (4) 3

Q46.If an iron (III) complex with the formula [Fe(NH3)x(CN)y]− has no electron in its eg orbital, then the value of x + y is JEE Main 2024 (04 Apr Shift 2) JEE Main Previous Year Paper (1) 4 (2) 5 (3) 6 (4) 3

Q46.Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B) JEE Main 2024 (30 Jan Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q46.Given below are two statements : Statement I : Piciric acid is 2,4,6 - trinitrotoluene. Statement II : Phenol - 2,4 - disulphonic acid is treated with Conc. HNO3 to get picric acid. In the light of the above statements, choose the most appropriate answer from the options given below : (1) Statement I is incorrect but Statement II is (2) Both Statement I and Statement II are incorrect correct (3) Statement I is correct but Statement II is (4) Both Statement I and Statement II are correct incorrect

Q46. The major products formed : A and B respectively are: JEE Main 2024 (06 Apr Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q46.Which of the following reaction is correct? (1) (2) (3) (4) C2H5 CONH2 + Br2 + NaOH →C2H5 CH2 NH2 + Na2 CO3 + NaBr + H2O

Q47. Identify the product (A) in the following reaction. (1) (2) (3) (4)

Q47.The number of unpaired d-electrons in [Co(H2O)6]3+ is (1) 2 (2) 1 (3) 0 (4) 4

Q47.Given below are two statement: Statements I : Bromination of phenol in solvent with low polarity such as CHCl3 or CS2 requires Lewis acid catalyst. Statements II : The Lewis acid catalyst polarises the bromine to generate Br+ . In the light of the above statements, choose the correct answer from the options given below : (1) Both Statement I and Statement II are true (2) Statement I is true but Statement II is false (3) Statement I is false but Statement II is true (4) Both Statement I and Statement II are false

Q47.Identify A and B in the following sequence of reaction (1) (2) (3) (4)

Q47.The final product A , formed in the following multistep reaction sequence is: (1) (2) (3) (4)

Q47.In which one of the following metal carbonyls, CO forms a bridge between metal atoms? (1) [Co2(CO)8] (2) [Mn2(CO)10] (3) [Os3(CO)12] (4) [Ru3(CO)12]

Q47.Given below are two statements : Statement (I) : Dimethyl glyoxime forms a six membered covalent chelate when treated with NiCl2 solution in presence of NH4OH . Statement (II) : Prussian blue precipitate contains iron both in +2 and +3 oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below: (1) Statement I is false but Statement II is true (2) Both Statement I and Statement II are true (3) Both Statement I and Statement II are false (4) Statement I is true but Statement II is false

Q47.Given below are two statements: Statement - I: High concentration of strong nucleophilic reagent with secondary alkyl halides which do not have bulky substituents will follow SN2 mechanism. Statement - II: A secondary alkyl halide when treated with a large excess of ethanol follows SN1 mechanism. In the the light of the above statements, choose the most appropriate from the questions given below: (1) Statement I is true but Statement II is false. (2) Statement I is false but Statement II is true. (3) Both statement I and Statement II are false. (4) Both statement I and Statement II are true.

Q47.Which of the following compound can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite. (1) (2) (3) (4) CH3CH2CH2CHO

Q47.Consider the following complex ions P = [FeF6]3– , Q = [V(H2O) 6]2+ , R = [Fe(H2O)6]2+ The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is : JEE Main 2024 (27 Jan Shift 1) JEE Main Previous Year Paper (1) R < Q < P (2) R < P < Q (3) Q < R < P (4) Q < P < R

Q47.In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is _____ (1) (2) (3) (4)

Q47.Identify the major product in the following reaction. (1) (2) (3) (4)

Q47.Given below are two statements : Statements I : Acidity of α -hydrogens of aldehydes and ketones is responsible for Aldol reaction. Statement II : Reaction between benzaldehyde and ethanal will NOT give Cross - Aldol product. In the light of the above statements, choose the most appropriate answer from the options given below : (1) Statement I is correct but Statement II is (2) Both Statement I and Statement II are correct incorrect (3) Both Statement I and Statement II are incorrect (4) Statement I is incorrect but Statement II is correct JEE Main 2024 (04 Apr Shift 1) JEE Main Previous Year Paper

Q47.The product A formed in the following reaction is: JEE Main 2024 (29 Jan Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Which among the following aldehydes is most reactive towards nucleophilic addition reactions? JEE Main 2024 (06 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Which of the following compounds will give silver mirror with ammoniacal silver nitrate? A. Formic acid B. Formaldehyde C. Benzaldehyde D. Acetone Choose the correct answer from the options given below : (1) A, B and C only (2) C and D only (3) B and C only (4) A only