Question: If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)
C.Remains unaltered
D.Changes unpredictably
Answer: Option A

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Question 1. The temperature dependence of reaction rate constant (K) by Arhenius law is given by
  1.    K α e-E/RT
  2.    K α eE/RT
  3.    K α T . e-E/RT
  4.    K α √T . e-E/RT
Answer: Option A
Question 2. Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot?
  1.    CA0 Vs t1/2
  2.    Ln CA0 Vs t1/2
  3.    CA0 Vs ln t1/2
  4.    Ln CA0 Vs ln t1/2
Answer: Option C
Question 3. A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is
  1.    0.33
  2.    0.5
  3.    1
  4.    Data insufficient, can't be predicted
Answer: Option C
Question 4. An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.
  1.    Increase
  2.    Increase exponentially
  3.    Decrease
  4.    Remain unchanged
Answer: Option C
Question 5. For multiple reactions, the flow pattern within the vessel affects the
  1.    Size requirement
  2.    Distribution of reaction products
  3.    Both A and B
  4.    Neither A nor B
Answer: Option C
Question 6. A space velocity of 5 hr⁻¹ means that
  1.    Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
  2.    After every 5 hours, reactor is being filled with the feed
  3.    Cent per cent conversion can be achieved in at least 5 hours
  4.    A fixed conversion of a given batch of feed takes 5 hours
Answer: Option A

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