Practice Questions

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.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. 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

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

Q47.Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: 𝑝𝐾𝑎 value of phenol is 10 . 0 while that of ethanol is 15 . 9. Reason R: Ethanol is stronger acid than phenol. In the light of the above statements, choose the correct answer from the options given below: (1) A is true but R is false (2) A is false but R is true (3) Both A and R are true and R is the correct (4) Both A and R are true but R is NOT the correct explanation of A explanation of A.

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.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): SN2 reaction of C6H5CH2Br occurs more readily than the SN2 reaction of CH3CH2Br . Reason (R) : The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring. In the light of the above statements, choose the most appropriate answer from the options given below : (1) (A) is correct but (R) is not correct (2) (A) is not correct but (R) is correct (3) Both (A) and (R) are correct but (R) is not the (4) Both (A) and (R) are correct and (R) is the correct explanation of (A) correct explanation of (A) JEE Main 2024 (09 Apr Shift 1) JEE Main Previous Year Paper

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

Q47.Identify the major products A and B respectively in the following set of reactions. (1) (2) (3) (4)

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

Q47.Phenolic group can be identified by a positive: (1) Phthalein dye test (2) Lucas test (3) Tollen’s test (4) Carbylamine test

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