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प्रश्न
Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.
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उत्तर
Boojho will not be successful because making of toy from Plaster of Paris (POP) is an irreversible change. Once the Plaster of Paris is mixed with water and dried it cannot regain its properties.
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संबंधित प्रश्न
Very Short Answer Type Question:
Can you say deforestation is an irreversible or reversible change?
A stretched rubber band comes back to normal shape. It is an example for ________.
Match the following.
| Bud to flower | Dr. A.P.J. Abdul Kalam |
| Reversible change | Recyclable waste |
| India 2020 | Organic waste |
| Paper | Melting of ice |
| Vegetables | Irreversible change |
Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Changes which cannot be reversed are called ______.
The blackening of the Silver anklet is a (an) ______.
Salt can be separated from its solution (salt dissolved in water), because ______.
Change of a bud into a flower is a change which cannot be reversed. Give four more such example.
Choose the odd one out. Give a reason for your choice.
Choose the odd one out. Give reason for your choice.
