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प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
विकल्प
Chemical change
Physical change
उत्तर
Chemical change
Explanation:
Rusting of an almirah is a chemical alteration because it produces a new chemical molecule known as hydrated iron oxide (rust).
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संबंधित प्रश्न
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
Write short answer.
Sublimation is classified as a physical change. Why ?
Write true or false
Burning of sugar is a temporary change.
Fill in the blank
Heat is ________ by a gas during the process of condensation.
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Classify the following as a physical or a chemical change.
Melting of wax
Given reason:
Burning of paper is a chemical change.
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
Grinding of wheat grain changes its size. It is a ____________ change.
