Practice Questions

Q43. The correct arrangement for decreasing order of electrophilic substitution for above compounds is : (1) (III) > (I) > (II) > (IV) (2) (IV) > (I) > (II) > (III) (3) (III) > (IV) > (II) > (I) (4) (II) > (IV) > (III) > (I) – −

Q43. List - I List - II A. K2 [Ni(CN)4] I. sp3 Match List I with List II B. [Ni(CO)4] II. sp3 d2 Choose the correct answer from the C. [Co(NH3)6]Cl3 III. dsp2 D. Na3 [CoF6] IV. d2sp3 options given below: (1) A-III, B-I, C-IV, D-II (2) A-III, B-I, C-II, D-IV (3) A-I, B-III, C-II, D-IV (4) A-III, B-II, C-IV, D-I

Q43.Element not showing variable oxidation state is : (1) Bromine (2) Iodine (3) Chlorine (4) Fluorine

Q43.The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is _____. Ti2+, Cr2+ and V2+ (1) 2 (2) 3 (3) 1 (4) 0

Q43.Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe3+ oxidises the iodide ion B. Fe3+ oxidises the persulphate ion C. Fe2+ reduces the iodide ion D. Fe2+ reduces the persulphate ion Choose the most appropriate answer from the options given below: (1) B only (2) A only (3) B and C only (4) A and D only

Q43.Identity the incorrect pair from the following: (1) Photography - AgBr (2) Polythene preparation - TiCl4, AlCH33 (3) Haber process - Iron (4) Wacker process - PtCl2

Q43.The final product A formed in the following multistep reaction sequence is (1) (2) (3) (4)

Q43.We have three aqueous solutions of NaCl labelled as ‘A’, ‘B’ and ‘C’ with concentration 0 . 1 M, 0 . 01M and 0 . 001 M, respectively. The value of van t’ Haft factor i for these solutions will be in the order. (1) iA < iB < iC (2) iA < iC < iB (3) iA = iB = iC (4) iA > iB > iC

Q43.The strongest reducing agent amont the following is: JEE Main 2024 (01 Feb Shift 2) JEE Main Previous Year Paper (1) NH3 (2) SbH3 (3) BiH3 (4) PH3

Q43.Integrated rate law equation for a first order gas phase reaction is given by (where 𝑃𝑖 is initial pressure and 𝑃𝑡 is total pressure at time 𝑡) 2 . 303 𝑃𝑖 2 . 303 2𝑃𝑖 (1) 𝑘= × log (2) 𝑘= × log 𝑡 2𝑃𝑖- 𝑃𝑡 𝑡 2𝑃𝑖- 𝑃𝑡 2 . 303 2𝑃𝑖- 𝑃𝑡 2 . 303 𝑃𝑖 (3) 𝑘= × log (4) 𝑘= × 𝑡 𝑃𝑖 𝑡 2𝑃𝑖- 𝑃𝑡

Q43.Alkyl halide is converted into alkyl isocyanide by reaction with (1) NaCN (2) NH4 CN (3) KCN (4) AgCN JEE Main 2024 (29 Jan Shift 2) JEE Main Previous Year Paper

Q43.Choose the correct Statements from the following: (A) Ethane −1 , 2 −diamine is a chelating ligand. (B) Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite. (C) Cyanide ion is used as ligand for leaching of silver. (D) Phosphine act as a ligand in Wilkinson catalyst. (E) The stability constants of Ca2+ and Mg2+ are similar with EDTA complexes. Choose the correct answer from the options given below: (1) (B), (C), (E) only (2) (C), (D), (E) only (3) (A), (B), (C) only (4) (A), (D), (E) only

Q43.Molar ionic conductivities of divalent cation and anion are 57 S cm2 mol−1 and 73 S cm2 mol−1 respectively. The molar conductivity of solution of an electrolyte with the above cation and anion will be : (1) 187 S cm2 mol−1 (2) 260 S cm2 mol−1 (3) 130 S cm2 mol−1 (4) 65 S cm2 mol−1

Q44.Identify the incorrect pair from the following : (1) Fluorspar- BF3 (2) Cryolite- Na3 AlF6 (3) Fluoroapatite- 3 Ca3 (PO4)2 ⋅CaF2 (4) Carnallite- KCl ⋅MgCl2 ⋅6H2O

Q44.Which of the following complex is homoleptic? (1) Ni ( CN ) 2 - (2) NiNH32Cl2 4 (3) FeNH34Cl2 + (4) CoNH34Cl2 +

Q44.Aluminium chloride in acidified aqueous solution forms an ion having geometry (1) Octahedral (2) Square Planar (3) Tetrahedral (4) Trigonal bipyramidal

Q44.Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolysed in presence of an acid results (1) Salicyclic acid (2) Benzene-1,2-diol (3) Benzene-1, 3-diol (4) 2-Hydroxybenzaldehyde

Q44.Identify from the following species in which d2sp3 hybridization is shown by central atom: (1) CoNH36 3 + (2) BrF5 (3) Pt ( Cl ) 2 - (4) SF6 4

Q44.Number of Complexes with even number of electrons in t2g orbitals is - [Fe(H2O)6]2+, [Co(H2O)6]2+, [Co(H2O)6]3+, [Cu(H2O)6]2+, [Cr(H2O)6]2+ (1) 2 (2) 3 (3) 1 (4) 5

Q44.The transition metal having highest 3rd ionisation enthalpy is: (1) Cr (2) Mn (3) V (4) Fe

Q44. NaCl reacts with conc. H2 SO4 and K2 Cr2 O7 to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are ; (1) CrO2 Cl2, Na2 CrO4 (2) Na2 CrO4, CrO2 Cl2 (3) CrO2 Cl2, KHSO4 (4) CrO2 Cl2, Na2 Cr2 O7

Q44.While preparing crystals of Mohr's salt, dil H2SO4 is added to a mixture of ferrous sulphate and ammonium sulphate, before dissolving this mixture in water, dil H2SO4 is added here to : (1) prevent the hydrolysis of ferrous sulphate (2) prevent the hydrolysis of ammonium sulphate (3) make the medium strongly acidic (4) increase the rate of formation of crystals

Q44.Alkaline oxidative fusion of MnO2 gives "A " which on electrolytic oxidation in alkaline solution produces 𝐵. 𝐴 and 𝐵 respectively are: (1) Mn2O7 and MnO4- (2) MnO42 - and MnO4- (3) Mn2O3 and MnO42 - (4) MnO42 - and Mn2O7

Q44.The coordination environment of Ca2+ ion in its complex with EDTA4− is : (1) tetrahedral (2) trigonal prismatic (3) octahedral (4) square planar

Q44. List - I List - II (Compound) (Uses) A. Iodoform I. Fire extinguisher Match List I with List II Choose the correct B. Carbon tetrachloride II. Insecticide C. CFC III. Antiseptic D. DDT IV. Refrigerants answer from the options given below: (1) A-I, B-II, C-III, D-IV (2) A-III, B-I, C-IV, D-II (3) A-II, B-IV, C-I, D-III (4) A-III, B-II, C-IV, D-I