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MCQs

Total Questions : 2307 | Page 21 of 231 pages
Question 201. Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N₂ + 3H₂ ⇋ 2NH₃.
  1.    Increases
  2.    Decreases
  3.    Remains unchanged
  4.    Unpredictable from the data
 Discuss Question
Answer: Option A. -> Increases
Question 202. Half life period of a chemical reaction is proportional to CA0-1 , if the reaction is of __________ order.
  1.    First
  2.    Zero
  3.    Second
  4.    Third
 Discuss Question
Answer: Option C. -> Second
Question 203. The unit of frequency factor in Arhenious equation is
  1.    Same as that of rate constant
  2.    Same as that of activation energy
  3.    Dimensionless
  4.    None of these
 Discuss Question
Answer: Option A. -> Same as that of rate constant
Question 204. The rate of reaction of a/an __________ reaction is not affected by temperature rise.
  1.    Autocatalytic
  2.    Photochemical
  3.    Consecutive
  4.    Zero order
 Discuss Question
Answer: Option B. -> Photochemical
Question 205. For a first order chemical reaction, the rate constant
  1.    Changes on changing the concentration units
  2.    Is not a function of the unit of time
  3.    Has unit of time⁻¹
  4.    None ofthese
 Discuss Question
Answer: Option C. -> Has unit of time⁻¹
Question 206. When a catalyst increases the rate of chemical reaction, the rate constant
  1.    Decreases
  2.    Increases
  3.    Remains constant
  4.    Becomes infinite
 Discuss Question
Answer: Option B. -> Increases
Question 207. If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst
  1.    Porosity is very important
  2.    Porosity is of less importance
  3.    Internal surface area is utilised efficiently
  4.    None of these
 Discuss Question
Answer: Option B. -> Porosity is of less importance
Question 208. Oil is hydrogenated using nickel catalyst in a __________ reactor.
  1.    Batch
  2.    Slurry
  3.    Fluidised bed
  4.    Fixed bed
 Discuss Question
Answer: Option B. -> Slurry
Question 209. Exposure of a photographic plate to produce a latent image is an example of __________ reaction.
  1.    Very slow
  2.    Very fast
  3.    Photochemical
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 210. A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to
  1.    Lose a proton
  2.    Gain a proton
  3.    Lose an electron
  4.    None of these
 Discuss Question
Answer: Option A. -> Lose a proton

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