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प्रश्न
Write true or false
Burning of sugar is a temporary change.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Changes in which only ______ properties of a substance change are called physical changes.
Match the columns
| column A | coulmn B |
| 1. A change which cannot be easily reversed | a. man-made change |
| 2.A change that repeats itself at regular intervals | b. chemical change |
| 3. A change that is made by humans | c. physical change |
|
4. A change in which the original substance cannot be obtained |
d. periodic change |
| 5. A change where no new substance is formade | e. irreversible change |
| f. slow change |
Write short answer.
Name two reversible changes.
State whether the following is physical or chemical changes.
burning of sugar —
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Classify the following changes as physical or chemical.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Sublimation of Iodine is a ______.
