Practice Questions

Q33.Which of the following is not correct? (1) ΔG is negative for a spontaneous reaction (2) ΔG is positive for a spontaneous reaction (3) ΔG is zero for a reversible reaction (4) ΔG is positive for a non-spontaneous reaction

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

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.For the given reaction, choose the correct expression of KC from the following: Fe3 + aq + SCN- aq ⇌(FeSCN ) 2 + aq (1) 𝐹𝑒𝑆𝐶𝑁2 + (2) 𝐹𝑒3 + 𝑆𝐶𝑁- 𝐾𝐶= + 𝐾𝐶= + 𝐹𝑒3 𝑆𝐶𝑁- 𝐹𝑒𝑆𝐶𝑁2 (3) 𝐹𝑒𝑆𝐶𝑁2 + (4) 𝐹𝑒𝑆𝐶𝑁2 2 𝐾𝐶= + + 𝐾𝐶= + 𝐹𝑒3 2𝑆𝐶𝑁-2 𝐹𝑒3 𝑆𝐶𝑁-

Q33. List-I List-II (Molecule) (Shape) A. NH3 I. Square pyramid Match List I with List II Choose the correct answer B. BrF5 II. Tetrahedral C. PCl5 III. Trigonal pyramidal D. CH4 IV. Trigonal bipyramidal from the options given below: (1) A-II, B-IV, C-I, D-III (2) A-III, B-I, C-IV, D-II (3) A-IV, B-III, C-I, D-II (4) A-III, B-IV, C-I, D-II JEE Main 2024 (08 Apr Shift 1) JEE Main Previous Year Paper

Q33. List - I (Element) List - II (Electronic configuration) A. N I. [Ar]3 d104 s24p5AR Match List I with List II B. S II. [Ne]3 s23p4 Choose C. Br III. [He]2 s22p3 D. Kr IV. [Ar]3 d104 s24p6 the correct answer from the options given below: (1) A-III, B-II, C-I, D-IV (2) A-II, B-I, C-IV, D-III (3) A-I, B-IV, C-III, D-II (4) A-IV, B-III, C-II, D-I JEE Main 2024 (09 Apr Shift 2) JEE Main Previous Year Paper

Q34.Which of the following is least ionic? (1) BaCl2 (2) AgCl (3) KCl (4) CoCl2 𝐶 Q35.𝐴𝑔⇌𝐵𝑔+ 1 2𝑔.1 The correct relationship between 𝐾𝑃, 𝛼 and equilibrium3 1 pressure 𝑃 is 2 (1) α 2P (2) α 2P KP = 1 KP = 1 2 2 +1 α32 2 +1 α121 −α (3) α 2P 2 (4) α 2P 2 KP = 3 KP = 3 2 + α 2 2 + α 2

Q34.Structure of 4 −Methylpent −2 −enal is: (1) (2) (3) (4)

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.IUPAC name of following compound is (1) 2 – Aminopentanenitrile (2) 2 – Aminobutanenitrile (3) 3 – Aminobutanenitrile (4) 3 – Aminopropanenitrile

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

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.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.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. According to IUPAC system, the compound is named as: (1) Cyclohex −1 −en −2 −ol (2) 1 −Hydroxyhex −2 −ene (3) Cyclohex −1 −en −3 −ol (4) Cyclohex −2 −en −1 −ol

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.Select the compound from the following that will show intramolecular hydrogen bonding. (1) H2O (2) NH3 (3) C2H5OH (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 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. List - I List - II (Hybridization) (Orientation in Space) A. sp3 I. Trigonal bipyramidal Match List I with List II Choose the correct B. dsp2 II. Octahedral C. sp3 d III. Tetrahedral D. sp3 d2 IV. Square planar answer from the options given below: (1) A-IV, B-III, C-I, D-II (2) A-III, B-IV, C-I, D-II (3) A-III, B-I, C-IV, D-II (4) A-II, B-I, C-IV, D-III

Q34. List - I List - II A. Melting Point [K] I. T1 > In > Ga > A1 > B Match List I with List II B. Ionic Radius [M+3/pm] II. B > T1 > A1 ≈Ga > In Choose the C. ΔiH1 [ kJ mol−1] III. T1 > In > A1 > Ga > B D. Atomic Radius [pm] IV. B > A1 > T1 > In > Ga correct answer from the options given below: (1) A-II, B-III, C-IV, D-I (2) A-IV, B-I, C-II, D-III (3) A-I, B-II, C-III, D-IV (4) A-III, B-IV, C-I, D-II

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

Q35.Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases down the group from C to Pb in a regular manner. (B) Electronegativity decreases from C to Pb down the group gradually. (C) Maximum covalance of C is 4 whereas other elements can expand their covalance due to presence of d orbitals. (D) Heavier elements do not form pπ −pπ bonds. (E) Carbon can exhibit negative oxidation states. Choose the correct answer from the options given below : (1) (A), (B) and (C) Only (2) (C), (D) and (E) Only (3) (C) and (D) Only (4) (A) and (B) Only