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प्रश्न
What are man-made changes ?
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उत्तर
Man-made changes are those that occur because of human activities e.g. changing the direction of flow of a river by building a dam.
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
mixing oil with water —
Fill in the blank
Changes that occur in nature are called ______
Classify the following as a physical or a chemical change.
Burning of coal
Given reason:
Burning of paper is a chemical change.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made change.
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
What type of change is colouring of a paper?
Water is known as a universal solvent. Why?
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
