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Question 1. Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.
  1.    -5 to 0
  2.    5 to 10
  3.    30 to 50
  4.    75 to 80
Answer: Option C

Question 2. Chloramines are used in water treatment for
  1.    Disinfection and control of taste & odour
  2.    Corrosion control
  3.    Removing turbidity
  4.    Control of bacteria
Answer: Option A

Question 3. Pick out the endothermic reaction out of the following.
  1.    C+1/2O₂ = CO
  2.    CO + 3H₂ = CH₄ + H₂O
  3.    CaCO₃ = CaO + CO₂
  4.    CO +1/2O₂ = CO₂
Answer: Option C

Question 4. With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide
  1.    Increases
  2.    Increases linearly
  3.    Decreases
  4.    Decreases linearly
Answer: Option C

Question 5. Setting of plaster of paris is accompanied with
  1.    Hydration
  2.    Dehydration
  3.    Hydrolysis
  4.    Loss of CO₂
Answer: Option A

Question 6. 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.
Answer: Option A