Citric acid used in production of beverages, toffees, chocolates is obtained by fermentation of …….. by Aspergillus niger.
- Agrapes
- ✓sugar molasses
- Capple
- Dcoffee nuts
Answer: B.
View full solution →Question types
P-2 Introduction to Microbiology question types
125 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
125
Questions
6
Question groups
5
Question types
01
M.C.Q
22 Q→02Answer the following questions:[1 M]
19 Q→03Give scientific reasons: [2 M]
8 Q→04Answer the following questions: [2 M]
34 Q→05Answer the following questions: [3 M]
34 Q→06Answer the following questions: [5 M]
8 Q→Sample Questions
P-2 Introduction to Microbiology questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
In which of the following industries microbial enzymes are not used?
- ✓Glass industry
- BCheese industry
- CTanning industry
- DPaper industry
Answer: A.
View full solution →Vinegar is the chemically ………… acid. (Board’s Model Activity Sheet)
- ACitric
- BGluconic
- CGlutamic
- ✓Acetic
Answer: D.
View full solution →…………. beverage is obtained by fermentation of apple juice. (July ’19)
- ✓Cider
- BWine
- CCoffee
- DCocoa
Answer: A.
View full solution →………….., a byproduct of fermentation is a biopesticide.
- AFluoroacetamide
- BVanillin
- CAspertame
- ✓Spinosad
Answer: D.
View full solution →Which different products can be produced with the help of Microbes?
Food materials like cold drinks, ice creams, cakes, juices are available in various colours and flavours. Whether these colours and flavours are really derived from fruits?
In the earlier class, you had prepared the solution of dry yeast for observation of yeast. Which substance is prepared by its use on commercial basis?
Find the odd one out: Actinomycetes, Streptomyces, Nocardia, yeast
Find the odd one out: Vinegar, Soya sauce, Ketchup, Monosodium glutamate
Microbial enzymes are used instead of chemical catalysts in chemical industry. (March 2019)
(OR)
Microbial enzymes are said to be eco-friendly.
(OR)
Microbial enzymes are said to be eco-friendly.
Enzymes obtained by microbial process are mixed with detergents.
Use of mutant strains has been increased in industrial microbiology.
Use of mutant strains has been increased in industrial microbiology.
Enzymes obtained by microbial process are mixed with detergents.
How does the bread become spongy?
How are microbes used in sewage management?
Complete the following conceptual picture related to environmental management.
Complete the following conceptual picture.
| ‘A’ group | ‘B’ group |
| (1) Xylitol | (a) Pigment |
| (2) Citric acid | (b) To impart sweetness |
| (3) Lycopene | (c) Microbial restrictor |
| (4) Nycin | (d) Protein binding emulsifier |
| (e) To impart acidity |
Why is it essential to ban plastic bags?
Which fuels are obtained from biomass?
Which plants are cultivated to obtain the fuel?
What are the benefits of mixing ethanol with petrol and diesel?
What is the role of microbes in compost production?
How can the oil spills of rivers and oceans be cleaned?
| Source | Microbe | Amino acid | Use |
| Sugar and beet molasses, ammonia salt | ___________________ | ___________________ | Production of monosodium glutamate (Ajinomoto). |
| ___________________ | Aspergillus niger | ___________________ | Drinks, toffees, chocolate production. |
| Glucose, corn steep liquor | ___________________ | Gluconic acid | ___________________ |
| Molasses, corn steep liquor | Lactobacillus delbrueckii | ___________________ | ___________________ |
| ___________________ | Aspergillus itaconius | Itaconic acid | ___________________ |
Write short note: Land-filling sites.
Write short note: Production of cheese.
Write short note: Production of Yoghurt.
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