Practice Questions

Q45. List - I List - II (Complex ion) (Spin only magnetic moment in B.M.) (A) [Cr(NH3)6]3+ (I) 4.90 Match List - I with List - II. Choose the (B) [NiCl4]2− (II) 3.87 (C) [CoF6]3− (III) 0.0 (D) [Ni(CN)4]2− (IV) 2.83 correct answer from the options given below : (1) (A)-(II), (B)-(III), (C)-(I), (D)-(IV) (2) (A)-(II), (B)-(IV), (C)-(I), (D)-(III) (3) (A)-(I), (B)-(IV), (C)-(II), (D)-(III) (4) (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Q46.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R . Assertion A: Haloalkanes react with KCN to form alkyl cyanides as a main product while with AgCN form isocyanide as the main product. Reason R: KCN and AgCN both are highly ionic compounds. In the light of the above statement, choose the most appropriate answer from the options given below. (1) A is correct but R is not correct (2) Both A and R are correct but R is not the correct explanation of A (3) A is not correct but R is correct (4) Both A and R are correct and R is the correct explanation of A

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.Identify the correct set of reagents or reaction conditions ' X ' and ' Y ' in the following set of transformation (1) X = dil.aq. NaOH, 20∘C, Y = Br2/CHCl3 (2) X = conc.alc. NaOH, 80∘C, Y = Br2/CHCl3 (3) X = dil.aq. NaOH, 20∘C, Y = HBr /acetic (4) X = conc.alc. NaOH, 80∘C, Y = HBr/ acetic acid acid

Q46.Yellow compound of lead chromate gets dissolved on treatment with hot NaOH solution. The product of lead formed is a : (1) Tetraanionic complex with coordination number (2) Neutral complex with coordination number four six (3) Dianionic complex with coordination number six (4) Dianionic complex with coordination number four

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

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.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.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.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : In aqueous solutions Cr2 + is reducing while Mn3 + is oxidising in nature. Reason R: Extra stability to half filled electronic configuration is observed than incompletely filled electronic configuration. In the light of the above statement, choose the most appropriate answer from the options given below: (1) Both A and R are true and 𝑅 is the correct (2) Both A and R are true but R is not the correct explanation of A explanation of A (3) A is false but R is true (4) A is true but R is false

Q46.The correct statements from the following are: A. The strength of anionic ligands can be explained by crystal field theory. B. Valence bond theory does not give a quantitative interpretation of kinetic stability of coordination compounds. C. The hybridization involved in formation of [Ni ( CN ) 4] 2 – complex is dsp2. D. The number of possible isomer(s) of cis-[PtCl2 ( en ) 2] 2 + is one Choose the correct answer from the options given below: (1) A, D only (2) A, C only (3) B, D only (4) B, C only

Q46.The correct order of ligands arranged in increasing field strength. (1) F−< Br−< I−< NH3 (2) Br−< F−< H2O < NH3 (3) H2O < −OH < CN−< NH3 (4) Cl−< −OH < Br−< CN−

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 coordination geometry around the manganese in decacarbonyldimanganese0 (1) Octahedral (2) Trigonal bipyramidal (3) Square pyramidal (4) Square planar

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.Match List I with List II List - I (Test) List - II (Observation) A. Br2 water test I. Yellow orange or orange red precipitate formed B. Ceric ammonium nitrate test II. Reddish orange colour disappears Choose C. Ferric chloride test III. Red colour appears D. 2, 4 - DNP test IV. Blue, Green, Violet or Red colour appear the correct answer from the options given below: (1) A-III, B-IV, C-I, D-II (2) A-I, B-II, C-III, D-IV (3) A-IV, B-I, C-II, D-III (4) A-II, B-III, C-IV, D-I

Q46.In alkaline medium. MnO−4 oxidises I− to (1) IO−4 (2) IO− (3) I2 (4) IO−3 JEE Main 2024 (29 Jan Shift 1) JEE Main Previous Year Paper

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.Which among the following compounds will undergo fastest SN2 reaction. (1) (2) (3) (4)

Q46.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The total number of geometrical isomers shown by [Co(en)2Cl2]+ complex ion is three. Reason (R): [Co(en)2Cl2]+ complex ion has an octahedral geometry. In the light of the above statements, choose the most appropriate answer from the options given below : (1) Both (A) and (R) are correct but (R) is not the (2) (A) is not correct but (R) is correct correct explanation of (A) (3) Both (A) and (R) are correct and (R) is the (4) (A) is correct but (R) is not correct correct explanation of (A)

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)

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)

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

Q47.Identify the name reaction. (1) Stephen reaction (2) Etard reaction (3) Gatterman-koch reaction (4) Rosenmund reduction