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Q.24 A hydrocarbon that undergoes ozonolysis (reaction with ozone followed by reduction with Me2 S)to form formaldehyde and glyoxal is Key Concept: Ozonolysis Ozonolysis cleaves carbon–carbon double bonds. Each carbon […]

Q.23 The Fisher projection that represents (2R,3S)-2,3-dihydroxybutanoic acid is Given Compound Molecular structure of 2,3-dihydroxybutanoic acid: CH3–CHOH–CHOH–COOH The molecule contains two chiral centers at carbon 2 and carbon 3. Important […]

Q.22 At 298 K, the bond dissociation energies of C–H, C–C and C=C are 415, 344 and 615 kJ mol−1, respectively. The enthalpy of atomization of carbon is 717 kJ […]

Q.21 For a first order reaction, the time required for 50% completion is 20 minutes. The time required for 99.9% completion of the reaction is ________ minutes. For a first […]

Q.20 Assuming ideal behavior, the density of fluorine gas at 20 °C and 0.3 atm is ________ g L−1. (Molecular weight of F2 = 38 g mol−1, R = 0.082 L […]

Q.19 The complex ion [Cr(H2O)6]3+ (atomic number of Cr is 24) exhibits (A) slightly distorted octahedral geometry (B) tetragonally elongated octahedral geometry (C) tetragonally compressed octahedral geometry (D) perfect octahedral […]

Q.18 The magnetic moment of an octahedral Co(II) complex is approximately 4.0 μB (atomic number of Co is 27). The CFSE for this complex, in Δo units, is ________. CFSE […]

Q.17 Diphosphonic acid (H4P2O5) has no P–P bond. This acid is (A) tetrabasic (B) tribasic (C) dibasic (D) monobasic Diphosphonic acid (H₄P₂O₅) has no P–P bond. This acid is (A) […]

Q.16 A ball of mass 330 g is moving with a constant speed, and its associated de Broglie wavelength is 1 × 10−33 m. The speed of the ball is […]

Q.15 The acid that undergoes decarboxylation most readily upon heating is Question Statement Which of the following acids undergoes decarboxylation most readily upon heating? Core Concept: Decarboxylation Rule β-keto acids […]