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69. The number of optically inactive geometrical isomers of [Pt(NH3)2(py)2Cl2]2+ is_______ . (where, ‘py’ is pyridine) Number of Optically Inactive Geometrical Isomers of [Pt(NH₃)₂(py)₂Cl₂]²⁺ Correct Answer Answer: 3 Understanding the […]

68. At constant pressure, 200 g of water was heated from 10°C to 22°C. The molar heat capacity of H2O at constant pressure is 75.3 JK-1 mol-1. The increase in […]

67. Which of the following statements are TRUE for hydrogen bonds? Strength of hydrogen bond is (A) low in a solvent of high dielectric constant (B) low in a solvent […]

66. Which one is the major product of the following reaction? NH2 Major Product of Diazotization and Azo Coupling Reaction with Sulfanilic Acid and Resorcinol Understanding the reaction mechanism, directing […]

65. Considering the periodic trends of elements, which of the following is NOT correct? (A) MgO and Na2O are basic, and SiO2 is acidic (B) Atomic radius decreases in a […]

64. Of the given isomers of molecules I and II, the meso-form is (A) (R,R)-isomer of I (B) (R,S)-isomer of II (C) (R,S)-isomer of I (D) (S,S)-isomer of II Which […]

63. The major product in the following reaction is Major Product of E2 Elimination in a Cyclohexane Ring Using NaOEt/EtOH In the given reaction, the substrate is a substituted cyclohexyl […]

62. Match the equations in the left column with their names in the right column (A) (i)-(s), (ii)-(r), (iii)-(p), (iv)-(q) (B) (i)-(p), (ii)-(q), (iii)-(r), (iv)-(s) (C) (i)-(p), (ii)-(q), (iii)-(s), (iv)-(r) […]

61. Consider two nuclei with the same mass number A. For which of the following values of A, the fusion reaction is NOT possible? (A) 15 (B) 22 (C) 29 […]

60. In acidic solution, permanganate ion is reduced by ferrous ion. The number of electrons involved in the reduction of permanganate ion is______ Reduction of Permanganate Ion by Ferrous Ion […]