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प्रश्न
Answer the following.
Which fuels are obtained from biomass?
उत्तर
Fuels which are obtained from biomass are called biofuels and they are an important and renewable source of energy. Biofuels can be in the form of either solid, liquid or gases.
- Solid biofuels - coal, dung, crop residue
- Liquid - vegetable oils, alcohol
- Gaseous - gobar gas, coal gas
संबंधित प्रश्न
Complete the following conceptual picture related to environmental management.
________ is a substance obtained by microbial processing that functions as an artificial sweetener.
Find an odd one out.
Lactic acid : To impart acidity : : Beta carotene : _____________________
Antibiotics cannot be obtained from a variety of bacteria and fungi.
Match the following.
| Column A | Column B |
| 1) Baker’s yeast | a) Probiotics |
| 2) Sauerkraut | b) Bread |
| 3) Ligases | c) Antibiotics |
| 4) Penicillin | d) Microbial enzyme |
Which fungus is used to make soya sauce by fermentation?
Why does the process of dirt removal occur in detergents even at low temperature?
Give scientific reason.
Probiotics have got more importance in recent times.
Give scientific reason.
A biofuel is an important tool in renewable energy sources.
Write a short note.
Probiotics
Write a short note.
Bioinsecticides
In industries microbial enzymes are used over chemical enzymes.
How are microbes useful in land filling for solid waste management?
Explain biofuel production with the help of diagram.
Observe the figure and write the answers to the questions asked.
- Name the above figure.
- What is it used for?
- Which gas is formed in it?
- How is this gas formed?
- What is done with sewage?
Complete the paragraph by selecting the appropriate option in parentheses.
(energy, microbial, erosion-proof, reused, purification, environmentally friendly)
Nowadays, instead of chemical catalysts, _______ enzymes are used in the chemical industry. These enzymes are active at low temperature, pH and pressure; due to which _______ is saved and _______ instruments are also not necessary. Enzymes carry out specific processes; hence unnecessary by-products are not formed due to which expenses on _______ are minimised. In case of microbial enzymatic reactions elimination and decomposition of waste material is avoided and enzymes can be _______ Hence, such enzymes are _______.
Match the following
| i. | Probiotic | a. | Kuru |
| ii. | Preservation | b. | Methanogen |
| iii. | Prion | c. | Curd |
| iv. | Biogas | d. | Sugar |
What is retting?
Lactobacillus brevis gives us the beverage ______.
