Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
पर्याय
True
False
Advertisements
उत्तर
This statement is True.
Explanation:
Anaerobic bacteria are microorganisms that can thrive in the absence of oxygen. These bacteria break down organic matter, such as animal waste, through a process called anaerobic digestion, and in the process, they produce biogas. Biogas primarily consists of methane, which can be used as a source of energy.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
Write true or false
Cutting of paper into pieces is a chemical change.
Classify the following as physical or chemical change :
Formation of curd from milk
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Fill in the blank.
The process of a liquid changing into a solid is called ________
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
Select the chemical changes from the following list of changes
The occurrence of lightning.
When solute is dissolved in a solvent it forms a solution.
Give an example of a physical change in which the color of the substance changes.
