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Question
The gases produced in anaerobic sludge digesters are _______.
Options
Methane, oxygen and hydrogen sulphide
Hydrogen sulphide, methane and sulphur dioxide
Hydrogen sulphide, nitrogen and methane
Methane, hydrogen sulphide and CO2
Solution
The gases produced in anaerobic sludge digesters are Methane, hydrogen sulphide and CO2.
RELATED QUESTIONS
Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer.
Biogas, Citric acid, Penicillin and Curd
The antibiotic chloromycetin is obtained from ______.
Name any two antibiotics with their microbial source.
Give the microbial source of Vit. B12
Give the biological name of the following:
The mould from which penicillin is obtained.
Ethanol is commercially produced through a particular species of ______.
What are A, B, C, and D in the table given below :
| Types of microbe | Name | Commercial product |
| Fungus | A | Penicillin |
| Bacterium | Acetobacter aceti |
B |
| C | Aspergillus niger | Citric acid |
| Yeast | D | Ethanol |
Write in brief about the Biogas production process.
Which of the following is/are the microbial source(s) for the enzyme pectinase?
Which one of the following processes involved in alcohol production is NOT involved in wine production?
Match the following list of bioactive substances and their roles:
| Bioactive Substance | Role |
| A. Statin | I. Removal of oil stains |
| B. Cyclosporin A | II. Removal of clots from blood vessels |
| C. Streptokinase | iii. Lowering of blood cholesterol |
| D. Lipase | iv. Immuno-suppressive agent |
Choose the correct match:
Why is distillation required for producing certain alcoholic drinks?
Name any two industrially important enzymes.
Name the scientists who were credited for showing the role of Penicillin as an antibiotic?
How do bioactive molecules of fungal origin help in restoring good health of humans?
Match the antibiotics in column I with their microbial sources in column II:
| Column I | Column II |
| (a) Chloromycetin | (1) Streptomyces griseus |
| (b) Erythromycin | (2) Streptomyces aurifaciens |
| (c) Streptomycin | (3) Streptomyces venezuelae |
| (d) Terramycin | (4) Streptomyces erythreus |
Match the following pairs:
| Column A | Column B | ||
| Antibiotic produced | Microbial source | ||
| (i) | Penicillin | (a) | Streptomyces venezuelae |
| (ii) | Chloromycetin | (b) | Bacillus licheniformis |
| (iii) | Bacitracin | (c) | Streptomyces aurifaciens |
| (iv) | Erythromycin | (d) | Streptomyces griseus |
| (v) | Streptomycin | (e) | Penicillium chrysogenum |
| (vi) | Terramycin | (f) | Streptomyces erythreus |
Identify the enzyme ‘A’ in a given reaction.
\[\ce{Fumaric acid + H2O ->['A']Malate}\]
Write the microbial source of following organic acid:
Fumaric acid
