Sail E0 Webinar

MCQs

Total Questions : 40 | Page 3 of 4 pages
Question 21.  
For the recovery of citric acid after fermentation, Ca(OH)2 is added to the slurry to
  1.    precipitate calcium carbonate
  2.    precipitate calcium citrate
  3.    precipitate calcium phosphate
  4.    precipitate calcium sulphate
 Discuss Question
Answer: Option B. -> precipitate calcium citrate
Question 22.  Spirit vinegar is produced from
  1.    fruit juices
  2.    malted grain
  3.    ethanol
  4.    ale
 Discuss Question
Answer: Option C. -> ethanol
Question 23.  Sugar content of the fermentation medium for citric acid is maintained at
  1.    10-15%
  2.    15-20%
  3.    20-25 %
  4.    25-30 %
 Discuss Question
Answer: Option C. -> 20-25 %
Question 24.  Which of the following microorganism is used for the production of citric acid?
  1.    Lactobacillus bulgaricus
  2.    Saccharomyces cerevisiae
  3.    Aspergillus niger
  4.    Streptococcus lactis
 Discuss Question
Answer: Option C. -> Aspergillus niger
Question 25.  In liquid surface culture process for the fermentation to produce citric acid,
  1.    A. niger is used with solid substrate as sweet potato
  2.    A. niger floats on the surface of solution
  3.    Fungal mycelium grows through out the solution in a deep tank
  4.    both (a) and (b)
 Discuss Question
Answer: Option B. -> A. niger floats on the surface of solution
Question 26.  In koji process for the fermentation to produce citric acid,
  1.    A. niger is used with solid substrate as sweet potato
  2.    A. niger floats on the surface of solution
  3.    Fungal mycelium grows through out the solution in a deep tank
  4.    both (a) and (b)
 Discuss Question
Answer: Option A. -> A. niger is used with solid substrate as sweet potato
Question 27. . Alegar is a type of vinegar produced from
  1.    fruit juices
  2.    malted grain
  3.    ethanol
  4.    ale
 Discuss Question
Answer: Option D. -> ale
Question 28. . In submerged process for the fermentation to produce citric acid,
  1.    A. niger is used with solid substrate as sweet potato
  2.    A. niger floats on the surface of solution
  3.    Fungal mycelium grows through out the solution in a deep tank
  4.    both (a) and (b)
 Discuss Question
Answer: Option C. -> Fungal mycelium grows through out the solution in a deep tank
Question 29. . During recovery step of citric acid, calcium citrate formed is treated with which of the following acid to precipitate calcium?
  1.    HCl
  2.    HNO3
  3.    H2SO4
  4.    None of these
 Discuss Question
Answer: Option C. -> H2SO4
Question 30.  What is the pH of the medium when molasses is used as substrate for the production of citric acid?
  1.    3
  2.    4
  3.    5
  4.    6
 Discuss Question
Answer: Option C. -> 5

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0