Question: The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is
A.15, 10, 5
B.5, 10, 15
C.10, 5, 15
D.10, 15, 5
Answer: Option A

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Question 1. The order of a chemical reaction is
  1.    An experimentally determined quantity
  2.    Always equal to the total stoichiometric number of reactants
  3.    Never fractional
  4.    None of these
Answer: Option A
Question 2. Pick out the wrong statement:
  1.    Chemical reactions with high activation energy are very temperature sensitive
  2.    A flat velocity profile exists in a plug flow reactor
  3.    The residence time for all the elements of fluid in case of a P.F.R. need not be same
  4.    Half life of a reaction increases with increased initial concentration for reaction orders more than one
Answer: Option C
Question 3. With increase in initial concentration, the fractional conversion of a first order reaction in a given time
  1.    Increases
  2.    Decreases
  3.    Remains constant
  4.    Unpredictable
Answer: Option C
Question 4. BET apparatus is used to determine the
  1.    Specific surface of a porous catalyst
  2.    Pore size distribution
  3.    Pore diameter
  4.    Porosity of the catalyst bed
Answer: Option A
Question 5. The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is
  1.    Backmix reactor
  2.    Plug flow reactor
  3.    Series of CSTR
  4.    PFR in series
Answer: Option A
Question 6. The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.
  1.    256
  2.    512
  3.    112
  4.    612
Answer: Option B

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