Advertisements
Advertisements
प्रश्न
A drawing sheet changes when you draw a picture on it. Can you reverse this change?
Advertisements
उत्तर
If we draw a picture on a drawing sheet with a pencil, we can get back the original drawing sheet by erasing the drawing with an eraser. In this case, the change can be reversed.
However, if we draw with a pen, then the original drawing sheet cannot be obtained back because we cannot erase ink. Hence, in this case, the change cannot be reversed.
संबंधित प्रश्न
Short Answer Type Question:
What is a physical change? Explain with example.
An example for reversible change is
Circle the odd one.
Choose the odd one out. Give reason for your choice.
Inflating a balloon, popping a balloon, fading of wall paint, burning of kerosene
Give examples to explain the difference between changes that can or cannot be reversed.
Changes which cannot be reversed are called ______.
Dissolving sugar in water is a ______ change.
Which of the following change cannot be reversed?
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.
Give one example of change which occurs on heating but cannot be reversed.
