Practice Questions

Q32.The correct order of the first ionization enthalpy is (1) Al > Ga > Tl (2) Ga > Al > B (3) Tl > Ga > Al (4) B > Al > Ga

Q32.The electron affinity value are negative for A. Be →Be− B. N →N− C. O →O2− D. Na →Na− E. Al →Al− Choose the most appropriate answer from the options given below : (1) D and E only (2) A, B and C only (3) A and D only (4) A, B, D and E only

Q32.The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals A. have the same energy B. have the minimum overlap C. have same symmetry about the molecular axis D. have different symmetry about the molecular axis Choose the most appropriate from the options given below: (1) A, B, C only (2) A and C only (3) B, C, D only (4) B and D only

Q33.Arrange the bonds in order of increasing ionic character in the molecules. LiF, K2O, N2, SO2 and ClF3 . (1) ClF3 < N2 < SO2 < K2O < LiF (2) LiF < K2O < ClF3 < SO2 < N2 (3) N2 < SO2 < ClF3 < K2O < LiF (4) N2 < ClF3 < SO2 < K2O < LiF

Q33.Which one of the following molecules has maximum dipole moment? (1) NF3 (2) CH4 (3) PF5 (4) NH3

Q33.Match List - I with List - II. List - I List - II Reaction Type of redox reaction (A) N2( g) + O2( g) →2NO(g) (I) Decomposition Choose the (B) 2 Pb(NO3)2( s) →2PbO(s) + 4NO2( g) + O2( g) (II) Displacement (C) 2Na(s) + 2H2O(I) →2NaOH(aq. + H2( g) (III) Disproportionation (D) 2NO2( g ) + 2−OH(aq. ) →NO−2( aq. ) + NO−3( aq. ) + H2O(l) (IV) Combination correct answer from the options given below : (1) (A)-(II), (B)-(III), (C)-(IV), (D)-(I) (2) (A)-(III), (B)-(II), (C)-(I), (D)-(IV) (3) (A)-(IV), (B)-(I), (C)-(II), (D)-(III) (4) (A)-(I), (B)-(II), (C)-(III), (D)-(IV)

Q33.Choose the polar molecule from the following : (1) CCl4 (2) CO2 (3) CH2 = CH2 (4) CHCl3

Q33.Consider the following elements. Which of the following is/are true about A', B', C' and D' ? A. Order of atomic radii: B' < A' < D' < C' B. Order of metallic character : B' < A' < D' < C' C. Size of the element : D' < C' < B' < A' D. Order of ionic radii : B'+ < A'+ < D'+ < C'+ Choose the correct answer from the options given below: (1) A only (2) A, B and D only (3) A and B only (4) B, C and D only

Q33.Match List - I with List-II List I (Molecule) List II (Shape) A. BrF5 i. T-shape B. H2O ii. See saw C. ClF3 iii. Bent D. SF4 iv. Square pyramidal (1) (A)-I, (B)-II, (C)-IV, (D)-III (2) (A) -II, (B)-I, (C)-III, (D)-IV (3) (A)-III, (B)-IV, (C)-I, (D)-II (4) (A)-IV, (B)-III, (C)-I, (D)-II

Q33. List - I List - II (A) ICl (I) T - shape Match List I with List II (B) ICl3 (II) pyramidal Choose the correct answer from the (C) ClF5 (III) Pentagonal bipyramidal (D) IF7 (IV) Linear options given below : (1) (A)-(IV), (B)-(I), (C)-(II), (D)-(III) (2) (A)-(I), (B)-(IV), (C)-(III), (D)-(II) (3) (A)-(IV), (B)-(III), (C)-(II), (D)-(I) (4) (A)-(I), (B)-(III), (C)-(II), (D)-(IV)

Q34.Select the compound from the following that will show intramolecular hydrogen bonding. (1) H2O (2) NH3 (3) C2H5OH (4)

Q34.Chlorine undergoes disproportionation in alkaline medium as shown below : aCl2( g) + bOH−(aq) →cClO−(aq) + dCl−(aq) + eH2 O(l) The values of a, b, c and d in a balanced redox reaction are respectively : (1) 1, 2, 1 and 1 (2) 2, 2, 1 and 3 (3) 3, 4, 4 and 2 (4) 2, 4, 1 and 3

Q34.Number of molecules/ions from the following in which the central atom is involved in sp3 hybridization is NO−3 , BCl3, ClO−2 , ClO3 (1) 4 (2) 3 (3) 2 (4) 1

Q34.The order of relative stability of the contributing structure is: JEE Main 2024 (27 Jan Shift 2) JEE Main Previous Year Paper Choose the correct answer from the options given below: (1) I > II > III (2) II > I > III (3) I = II = III (4) III > II > I

Q34.The equilibrium Cr2O2−7 ⇌2CrO2−4 is shifted to the right in : (1) an acidic medium (2) a basic medium (3) a neutral medium (4) a weakly acidic medium

Q34. List-I List-II (Molecule) (Shape) A. Fe4[Fe(CN)6]3 ⋅xH2O I. Violet Match List I with List II Choose the correct answer B. [Fe(CN)5NOS4− II. Blood Red A C. [Fe(SCN)]2+ III. Prussian Blue D. (NH4)3PO4 ⋅12MoO3 IV. Yellow from the options given below: (1) A-III, B-I, C-II, D-IV (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

Q34.Consider the oxides of group 14 elements 𝑆𝑖𝑂2, 𝐺𝑒𝑂2, 𝑆𝑛𝑂2, 𝑃𝑏𝑂2, 𝐶𝑂 and 𝐺𝑒𝑂. The amphoteric oxides are (1) GeO, GeO2 (2) SiO2, GeO2 (3) SnO2, PbO2 (4) SnO2, CO

Q34.Identify the incorrect statements regarding primary standard of titrimetric analysis. (A) It should be purely available in dry form. (B) It should not undergo chemical change in air. (C) It should be hygroscopic and should react with another chemical instantaneously and stoichiometrically. (D) It should be readily soluble in water. (E) KMnO4 & NaOH can be used as primary standard. Choose the correct answer from the options given below : (1) (A) and (B) only (2) (C) and (E) only (3) (B) and (E) only (4) (C) and (D) only

Q34.The number of ions from the following that are expected to behave as oxidising agent is : Sn4+, Sn2+, Pb2+, Tl3+, Pb4+, Tl+ (1) 3 (2) 2 (3) 1 (4) 4

Q34.Which of the following is strongest Bronsted base? (1) (2) (3) (4)

Q34.The statement(s) that are correct about the species O2−, F−, Na+ and Mg2+ . (A) All are isoelectronic (B) All have the same nuclear charge (C) O2− has the largest ionic radii (D) Mg2+ has the smallest ionic radii Choose the most appropriate answer from the options given below : (1) (B), (C) and (D) only (2) (C) and (D) only (3) (A), (C) and (D) only (4) (A), (B), (C) and (D)

Q34.The correct statement/s about Hydrogen bonding is/are A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom. B. Intermolecular H bonding is present in o-nitro phenol C. Intramolecular H bonding is present in HF. D. The magnitude of H bonding depends on the physical state of JEE Main 2024 (04 Apr Shift 2) JEE Main Previous Year Paper the compound. E. H-bonding has powerful effect on the structure and properties of compounds Choose the correct answer from the options given below: (1) A, B, D only (2) A, D, E only (3) A only (4) A, B, C only

Q35.The ascending acidity order of the following H atoms is (1) C < D < B < A (2) A < B < C < D (3) A < B < D < C (4) D < C < B < A

Q35.The correct increasing order for bond angles among BF3, PF3 and ClF3 is : (1) BF3 < PF3 < ClF3 (2) ClF3 < PF3 < BF3 (3) PF3 < BF3 < ClF3 (4) BF3 = PF3 < ClF3

Q35.The number of species from the following that have pyramidal geometry around the central atom is _______. S2O2−3 , SO2−4 , SO2−3 , S2O2−7 (1) 4 (2) 3 (3) 2 (4) 1