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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
An example for reversible change is
Circle the odd one.
Drying of wet clothes in air is an example of
Periodical removal of one of the products of a reversible reaction increases the yield.
Differences between
reversible and irreversible changes are:
Analogy:
Irreversible change: Making idly front batter.
Reversible change: ______.
Can we reverse the following change? If yes, suggest the name of the method.
Water into water vapour
Give one example of change which occurs on cooling but can be reversed.
Choose the odd one out. Give a reason for your choice.
Circle the odd one out. Give a reason for your choice.
