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91. Which one of the following ions has the maximum number of unpaired electrons? (A) Cu²⁺ (B) Na⁺ (C) Cr³⁺ (D) Fe³⁺ Which Ion Has the Maximum Number of Unpaired […]

88. The number of distinct products formed after the nitration of tetralone in the presence of HNO₃ and H₂SO₄ is ________. (in integer) Number of Distinct Products Formed After Nitration […]

87. If a weak acid HA is 0.1% ionized (dissociated) in a 0.2 M solution, its pH will be ________. (round off to one decimal place) pH of a Weak […]

86. The volume of 4 M NaOH (in ml) required to make 350 ml solution of 1.2 M NaOH is ________. (in integer) Volume of 4 M NaOH Required to […]

85. Which of the following statements is/are true about phenoxide ions? (A) Phenoxides undergo O-alkylation in ethers (B) Phenoxides undergo extensive C-alkylation in trifluoroethanol (C) Ethers make strong hydrogen bonds […]

84. The correct relation between the equilibrium constants of the forward reaction (Kf) and the reverse reaction (Kr) at the same temperature is: (A) Kf = Kr (B) Kf = […]

83. The correct gas phase acidity order for alcohols FCH₂OH, CH₃OH, ClCH₂OH and BrCH₂OH is (A) ClCH₂OH > BrCH₂OH > CH₃OH > FCH₂OH (B) FCH₂OH > BrCH₂OH > ClCH₂OH > […]

82. The repulsive interaction between different types of electron pairs increases in the order of (A) bond pair – bond pair < lone pair – bond pair < lone pair […]

81. Which one of the following is the correct decreasing order for the magnitude of Electron Gain Enthalpy () for the elements given below? (A) Br > Cl > At […]

80. The number of equatorial hydrogens in the following structure is Number of Equatorial Hydrogens in trans-Decalin Correct Answer ✅ Correct Answer: 8 Identifying the Structure The given compound is […]