Home⇒ Medical Science⇒ Biotechnology⇒ Vinegar and citric acid
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Which of the following microorganism is used for the production of citric acid? Aspergillus niger [other wrong options] [Discuss in forum] |
| Q2 ⇒ Which substrate is used in the fermentation of citric acid? All of these [other wrong options] [Discuss in forum] |
| Q3 ⇒ Ethanol is oxidized to acetic acid aerobically using both (a) and (b) [other wrong options] [Discuss in forum] |
| Q4 ⇒ Sugar content of the fermentation medium for citric acid is maintained at 20-25 % [other wrong options] [Discuss in forum] |
| Q5 ⇒ Alegar is a type of vinegar produced from ale [other wrong options] [Discuss in forum] |
| Q6 ⇒ Malt vinegar is produced from malted grain [other wrong options] [Discuss in forum] |
| Q7 ⇒ In liquid surface culture process for the fermentation to produce citric acid, A. niger floats on the surface of solution [other wrong options] [Discuss in forum] |
| Q8 ⇒ Cider vinegar is produced from fruit juices [other wrong options] [Discuss in forum] |
| Q9 ⇒ For the recovery of citric acid after fermentation, Ca(OH)2 is added to the slurry to precipitate calcium citrate [other wrong options] [Discuss in forum] |
| Q10 ⇒ In submerged process for the fermentation to produce citric acid, Fungal mycelium grows through out the solution in a deep tank [other wrong options] [Discuss in forum] |
| Q11 ⇒ What is the pH of the medium when molasses is used as substrate for the production of citric acid? 5 [other wrong options] [Discuss in forum] |
| Q12 ⇒ What is the pH of the medium when sucrose is used as substrate for the production of citric acid? 3 [other wrong options] [Discuss in forum] |
| Q13 ⇒ Vinegar production consists of anaerobic fermentation followed by aerobic fermentation [other wrong options] [Discuss in forum] |
| Q14 ⇒ Vinegar is typically produced in fed batch reactors because a fed batch reactor can be used to maintain low ethanol concentrations [other wrong options] [Discuss in forum] |
| Q15 ⇒ Which of the following nitrogen sources is added in the fermentation medium of citric acid production? Both (a) and (b) [other wrong options] [Discuss in forum] |
| Q16 ⇒ In koji process for the fermentation to produce citric acid, A. niger is used with solid substrate as sweet potato [other wrong options] [Discuss in forum] |
| Q17 ⇒ Spirit vinegar is produced from ethanol [other wrong options] [Discuss in forum] |
| Q18 ⇒ During recovery step of citric acid, calcium citrate formed is treated with which of the following acid to precipitate calcium? H2SO4 [other wrong options] [Discuss in forum] |