Practice Questions

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.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.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.Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : H2Te is more acidic than H2 S. Reason R: Bond dissociation enthalpy of H2Te is lower than H2 S. In the light of the above statements. Choose the most appropriate from the options given below. JEE Main 2024 (30 Jan Shift 2) JEE Main Previous Year Paper (1) Both A and R are true but R is NOT the correct (2) Both A and R are true and R is the correct explanation of A. explanation of A. (3) A is false but R is true. (4) A is true but R is false.

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

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)

Q33.Given below are two statements : Statement I : The correct order of first ionization enthalpy values of Li, Na, F and Cl is Na < Li < Cl < F. Statement II : The correct order of negative electron gain enthalpy values of Li, Na, F and Cl is Na < Li < F < Cl In the light of the above statements, choose the correct answer from the options 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

Q33.Given below are two statements: Statement I: Fluorine has most negative electron gain enthalpy in its group. Statement II: Oxygen has least negative electron gain enthalpy in its group. In the light of the above statements, choose the most appropriate 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) Both Statement I and Statement II are false (4) Statement I is false but Statement II is true JEE Main 2024 (29 Jan Shift 2) JEE Main Previous Year Paper

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

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

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.Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A: PH3 has lower boiling point than NH3 . Reason R: In liquid state NH3 molecules are associated through Vander Waal's forces, but PH3 molecules are associated through hydrogen bonding. In the light of the above statements, choose the most appropriate answer from the options given below: (1) Both A and R are correct and R is not the correct (2) A is not correct but R is correct explanation of A (3) Both A and R are correct but R is the correct (4) A is correct but R is not correct explanation of A

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

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 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

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.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.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.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : NH3 and NF3 molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of NH3 is greater than that of NF3 . Reason (R) : In NH3 , the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the N −H bonds. F is the most electronegative element. In the light of the above statements, choose the correct answer from the options given below : (1) Both (A) and (R) are true and (R) is the correct (2) (A) is false but (R) is true explanation of (A) (3) Both (A) and (R) are true but (R) is NOT the (4) (A) is true but (R) is false correct explanation of (A)

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