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प्रश्न
Fill in the blank with the correct word of the statement given below:
Ammonium chloride, a sublimable solid undergoes _________ on heating.
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उत्तर
Ammonium chloride, a sublimable solid undergoes dissociation on heating.
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संबंधित प्रश्न
What do you observe when :
a piece of paper is burnt
What do you observe when :
a spoon of sugar is heated in a pan
State whether the following is physical or chemical changes.
passing electric current through a heater rod —
True or false?
In a chemical change, rearrangement of molecules and atoms involves some energy changes.
What role does energy play in initiating a chemical change ?
Under which different types can the following changes be classified?
Stretching of a spring.
Explain in brief the involvement of energy in physical and chemical changes.
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 |
The difference between initial state and the final state is called change.
______ is the process in which something becomes different from what it was earlier.
