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MCQs

Total Questions : 95 | Page 2 of 10 pages
Question 11. The angular part of the wavefunction for the electron in a hydrogen atom is proportional to sin2θ cos θ e2iØ . The values of the azimuthal quantum number (l) and the magnetic quantum number (m) are, respectively
  1.    2 and 2
  2.    2 and "“2
  3.    3 and 2
  4.    3 and -2
 Discuss Question
Answer: Option C. -> 3 and 2


-NA-


Question 12. A metal chelate that can be used for separation and quantitative analysis of aluminium ions by gas
chromatography is
  1.    EDTA
  2.    ethylene glycol
  3.    dinonyl phthalate
  4.    trifluoroacetylacetone
 Discuss Question
Answer: Option D. -> trifluoroacetylacetone


-NA-


Question 13. I f xA and xB are the respective mole fractions of A and B in an ideal solution of the two and TA, TB,
T are the fusion temperatures of pure A, pure B and the ideal solution respectively, then
  1.    .
  2.    .
  3.    .
  4.    .
 Discuss Question
Answer: Option D. -> .


-NA-


Question 14. For the following reaction 2MnO4─ + 5H2C2O4 + 6H+ → 2Mn2+ + 8H2O + 10CO2 Eo(MnO4─/Mn2+) = +1.51 V and Eo(CO2/H2C2O4) = ─ 0.49 V. At 298 K, the equilibrium constant is
  1.    10500
  2.    10338
  3.    1038
  4.    10833
 Discuss Question
Answer: Option B. -> 10338


-NA-


Question 15. The ground states of high-spin octahedral and tetrahedral Co(II) complexes are, respectively
  1.    4T2g and 4A2
  2.    4T1g and 4A2
  3.    3T1g and 4A2
  4.    4T1g and 3T1
 Discuss Question
Answer: Option B. -> 4T1g and 4A2


-NA-


Question 16. The INCORRECT statement about Zeise's salt is
  1.    Zeise's salt is diamagnetic
  2.    The oxidation state of Pt in Zeise's salt is +2
  3.    All the Pt─Cl bond lengths in Zeise's salt are equal
  4.    C─C bond length of ethylene moiety in Zeise's salt is longer than that of free ethylene molecule
 Discuss Question
Answer: Option C. -> All the Pt─Cl bond lengths in Zeise's salt are equal


-NA-


Question 17. A crystal has the lattice parameters a ≠ b ≠ c and α = β = ϒ = 90o. The crystal system is
  1.    tetragonal
  2.    monoclinic
  3.    cubic
  4.    orthorhombic
 Discuss Question
Answer: Option D. -> orthorhombic


-NA-


Question 18. The catalyst and co-catalyst used in the Wacker process, respectively, are
  1.    PdCl2and Cu
  2.    CuCl2and [PdCl4]2"“
  3.    Pdand CuCl
  4.    [PdCl4]2"“and CuCl2
 Discuss Question
Answer: Option B. -> CuCl2and [PdCl4]2"“


-NA-


Question 19. The by-product formed in the characteristic reaction of (CO)5Cr=C(OMe)(Me) with MeNH2 is
  1.    CO
  2.    MeOH
  3.    MeCHO
  4.    MeCONH2
 Discuss Question
Answer: Option B. -> MeOH


-NA-


Question 20. Oxymyoglobin Mb(O2) and oxyhemoglobinHb(O2)4, respectively, are
  1.    paramagnetic and paramagnetic
  2.    diamagnetic and diamagnetic
  3.    paramagnetic and diamagnetic
  4.    diamagnetic and paramagnetic
 Discuss Question
Answer: Option B. -> diamagnetic and diamagnetic


-NA-


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