Fermentation is adversely affected by the____________________?

Related Mcqs:

1. Penicillin is made employing _______________ fermentation process?

   A. Continuous
   B. Aerobic batch
   C. Anaerobic batch
   D. None of these

2. Air used in aerobic fermentation must be sterilized, otherwise the ___________________?

   A. Recovery of product will be difficult
   B. Contamination of pure culture would result
   C. Uniformity of product cannot be achieved
   D. None of these

3. Fermentation of molasses to produce ethyl alcohol is done at ________________ °C?

   A. 20 – 30
   B. < – 5
   C. 100 – 150
   D. 250 – 300

4. Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is ____________ °C?

   A. -5 to 0
   B. 5 to 10
   C. 30 to 50
   D. 75 to 80

5. At very high concentration of enzymes, the rate of fermentation chemical reaction is _____________ the concentration of reactants?

   A. Independent of
   B. Directly proportional to
   C. Inversely proportional to
   D. Proportional to the square of

6. Production of alcohol by fermentation of molasses is a/an _____________ process?

   A. Anaerobic
   B. Aerobic
   C. Endothermic
   D. Both B. and C.

7. Nylon-66 is so named because the____________________?

   A. Average degree of polymerisation of the polymer is 1966
   B. Number of carbon atoms between two nitrogen atoms are 6
   C. Number of nitrogen atoms between two carbon atoms are 6
   D. Polymer was first synthesised in 1966

8. Nickel is not used as a catalyst in the____________________?

   A. Fischer-Tropsch process
   B. Shift conversion
   C. Hydrogenation of oil
   D. Ostwald’s process of HNO3 manufacture

9. Glycerine is not used in the____________________?

   A. Manufacture of explosive
   B. Conditioning and humidification of tobacco
   C. Manufacture of pharmaceuticals
   D. None of these

10. Presence of carbonaceous matter in the sewage____________________?

    A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic
    creatures
    B. Reduces sulphate ions to sulphides causing obnoxious smell
    C. Increases the quantity of chlorine used for its purification
    D. All A, B. and C.