Q. Match the metalloproteins with their respective functions. PFerritinIElectron transferQRubredoxinIIAcid-base catalysisRCobalaminIIIMetal storageSCarbonic anhydraseIVMethyl transfer A. P – III; Q – II; R – I; S – IV B. P – III; Q – I; R – IV; S – II C. P – IV; Q – I; R – III; S – II ...

Q. The correct molecular representation of W(Cp)2(CO)2 is (Cp = cyclopentadienyl) (A) (B) (C) (D) Ans:

Q. The product obtained in the reaction of Mn2(CO)10 with Br2 is (A) Mn(CO)5Br (B) Mn2(CO)8Br2 (C) Mn(CO)4Br2 (D) Mn2(CO)9Br Ans: Mn(CO)5Br The process of Bromination or Halogenation of Mn2(CO)10 with the scission of Mn- Mn results in the formation of Manganese pentacarbonyl ...

Q. In the EPR spectrum of a methyl radical, the number of lines and their relative intensities, respectively, are (A) 1 and 1 (B) 3 and 1:2:1 (C) 4 and 1:2:2:1 (D) 4 and 1:3:3:1 Ans: 4 and 1 ∶ 3 ∶ 3 ∶ 1

Q. Following are the examples of silicate minerals Zircon, ZrSiO4            Beryl, Be3Al2Si6O18           Pyrophyllite, Al2(OH)2 ...

Q. Among the following compounds, a normal spinel is (A) MgFe2O4 (B) ZnFe2O4 (C) CoFe2O4 (D) CuFe2O4 Ans: ZnFe2O4 Solution: A spinel compound is made up of eight FCC unit cells with a 2x2x2 oxygen ion configuration. According to the spaces occupied by the cations in the ...

Q. The experimentally observed magnetic moment values, which match well with the spin-only values for the pair of aqueous ions is (Atomic number: Cr = 24, Co = 27, Gd = 64, Tb = 65, Dy = 66 and Lu = 71) (A) Cr(III) and Gd(III) (B) Co(II) and Gd (III) (C) Cr(III) and Dy(III) (D) ...

Q. Gas phase bond length and dipole moment of a compound (MX) is 3 Å and 10.8 D, respectively. The ionic character in gas phase MX is _________________%. (Round off to one decimal place) (1D = 3.336 × 10–30 C m) Solution: To determine the Ionic character of a given compound, Dipole moment ...

Q. In a 400 MHz 1H NMR spectrometer, a proton resonates at 1560 Hz higher than that of tetramethylsilane. The chemical shift value of this proton is___________ppm. (Round off to one decimal place) (Chemical shift of tetramethylsilane is fixed at zero ppm) Solution: The chemical shift of ...

Q. Consider a system of three identical and distinguishable non-interacting particles and three available nondegenerate single particle energy levels having energies 0, e and 2e. The system is in contact with a heat bath of temperature T K. A total energy of 2ɛ is shared by these three particles. ...

Q. Consider a two-state system at thermal equilibrium having energies 0 and 2kBT for which the degeneracies are 1 and 2, respectively. The value of the partition function at the same absolute temperature T is ______.  (Round off to two decimal places) (kB is the Boltzmann constant) Solution: ...

Q. The entropy change for the melting of ‘x’ moles of ice (heat of fusion is 80 cal g–1) at 273 K and 1 atm pressure is 28.80 cal K–1. The value of ‘x’ is___________. (Round off to two decimal places) (Molecular weight of water =18 g/mol) Solution: Δ S = Δ H/ T , OR  Δ S = Δ H x W / T ...