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

Related Mcqs:

1. Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in______________________?

   A. Pyrolysis of oil B. Sintering of porous catalyst C. Hydrogen embrittlement D. All A, B. and C....

2. Fermentation is adversely affected by the____________________?

   A. Presence of air B. Absence of air C. High concentration D. Presence of ammonium salts...

3. Penicillin is made employing _______________ fermentation process?

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

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

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

5. 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...

6. 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...

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

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

8. Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is___________________?

   A. 0.14 B. 0.34 C. 0.94 D. 1.4...

9. Lime and soda ash are added to water to remove ___________________?

   A. Bicarbonates & sulphates of calcium and magnesium B. Undesirable taste and odour C. Bacteria D. Its corrosiveness...

10. Titanium dioxide is a/an ___________________ colour pigment?

    A. White B. Black C. Yellow D. Blue...