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प्रश्न
Write true or false
Melting of ice is a physical change.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Changes in which only ______ properties of a substance change are called physical changes.
State the differences between a physical change and a chemical change.
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Photosynthesis cannot take place at night.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Select the chemical changes from the following list of changes
Vaporisation of water into water vapour.
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity 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. |
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
Iron pipes coated with zinc do not get rusted easily.
