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Total Questions : 95 | Page 10 of 10 pages
Question 91. e-2x2 is an eigen function of the operator (d2/dx2 - 16 x2). The corresponding eigen value is
  1.    +4
  2.    -4
  3.    +2
  4.    -2
 Discuss Question
Answer: Option B. -> -4


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Question 92. The change in enthalpy when 3 mol of liquid benzene transforms to the vapor state at its boiling
temperature (80 °C) and at 1 bar pressure is _____________ kJ.
  1.    80 to 85
  2.    85 to 90
  3.    90 to 95
  4.    95 to 100
 Discuss Question
Answer: Option C. -> 90 to 95


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Question 93. The moment of inertia of a homonuclear diatomic molecule is 7.5 * 10“45 kg m2. Its rotational
partition function at 500 K is _____________ .
  1.    3500 to 3800
  2.    6700 to 7000
  3.    4300 to 4600
  4.    4500 to 4800
 Discuss Question
Answer: Option D. -> 4500 to 4800


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Question 94. The temperature dependence of partition functions are as follows: qtranslation ∝ T3/2                            qvibration ∝ T0 qrotation ∝ T (linear molecule)     qrotation ∝ T3/2 (non-linear molecule) According to the conventional transition state theory (CTST), the temperature dependence of the Arrhenius pre-exponential factorfor a reaction of the type given below is linear molecule + linear molecule ⇆ non-linear transition state → products
  1.    T-1
  2.    T0
  3.    T1
  4.    T2
 Discuss Question
Answer: Option A. -> T-1


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Question 95. Decarbonylation reaction of [cis-(CH3CO)Mn(13CO)(CO)4] yields X,Y and Z, whereX =[(CH3)Mn(CO)5]; Y = [cis-(CH3)Mn(13CO)(CO)4]; Z = [trans-(CH3)Mn(13CO)(CO)4]The molar ratio ofthe products(X : Y : Z) in this reaction is
  1.    1 : 1 : 1
  2.    1 : 2 : 1
  3.    1 : 1 : 2
  4.    2 : 1 : 1
 Discuss Question
Answer: Option B. -> 1 : 2 : 1


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