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प्रश्न
Classify the following as physical or chemical change :
Formation of curd from milk
पर्याय
Physical change
Chemical change
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उत्तर
Formation of curd from milk – Chemical change
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संबंधित प्रश्न
Explain the following giving an example.
Pure substance
Name a chemical change which takes place in presence of:
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
What is a physical change ? Give two examples of physical changes.
Give four difference between physical and chemical changes.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Select the chemical changes from the following list of changes
The carbon cycle.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Match the items of Column I with the items of Column II.
| Column I | Column II | ||
| (a) | Large crystals | (i) | Turns lime water into milky |
| (b) | Depositing a layer of zinc on iron | (ii) | Physical change |
| (c) | Souring of milk | (iii) | Rust |
| (d) | Carbon dioxide | (iv) | Sugar candy (Mishri) |
| (e) | Iron oxide | (v) | Chemical change |
| (f) | Dissolving common salt in water | (vi) | Galvanisation |
The change of state of a substance from solid to liquid and liquid to gas is ______.
