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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement
Burning is a
पर्याय
slow process
fast process
natural process
none of the above
उत्तर
fast process
APPEARS IN
संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
State whether the following is physical or chemical changes.
burning of wood -
Tick (√) the correct alternative from the choice given for the following statement
When sugar is heated, its colour changes into
Fill in the blank
An earthquake is a _______ change.
What role does energy play in initiating a chemical change ?
Under which different types can the following changes be classified?
Revolution of the earth around the sun.
Give reason.
A dry handkerchief gets wet at once on dipping in water, but it takes longer for a wet handkerchief to dry.
How can a change occur in a substance?
Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not.
| S. No. | Change | Can be reversed (Yes/No) |
| 1. | The sawing of a piece of wood | |
| 2. | The melting of ice candy | |
| 3. | Dissolving sugar in water | |
| 4. | The cooking of food | |
| 5. | The ripening of a mango | |
| 6. | Souring of milk |
Paper, LPG, CNG petrol, etc, are ______ substances.
