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प्रश्न
Write true or false
Cutting of paper into pieces is a chemical change.
पर्याय
True
False
उत्तर
False
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संबंधित प्रश्न
Fill in the blank.
Changes that occur in nature are called ........................
What are reversible and irreversible changes ? Give one example for each.
A physical change is temporary. Explain.
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
What will you take into account while identifying the following?
A physical change in a substance.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Periodic and non-periodic change
Filling up a balloon with hot air is a _______ change.
Classify the following changes as physical and chemical changes
A rough piece of wood is sanded and polished resulting in change in texture, Rusting of a iron nail, Painting the grill, Bending a paper clip, Pounding silver into thin plate, Rolling the chappathi dough into thin wire, Occurrence of day and night, eruption of volcano, burning of matchstick, dosa from the batter, blinking of eyelids, occurrence of a thunderstorm, rotation of the earth, formation of eclipses.
| Sr. No. | Physical changes | Chemical changes |
| 1. | ||
| 2. |
