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प्रश्न
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
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उत्तर
chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Write short answer.
Name two reversible changes.
State whether the following is physical or chemical changes.
mixing oil with water —
Which of the following are physical changes and which are chemical changes ?
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
