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प्रश्न
True or false
Change of seasons is a non-periodic change.
विकल्प
True
False
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उत्तर
False.
Change of seasons is a periodic change.
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संबंधित प्रश्न
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
cutting wood into small pieces —
True or false
In a physical change no net energy change is involved.
Tick the most appropriate answer.
Physical changes are
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Give four difference between physical and chemical changes.
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Filling up a balloon with hot air is a _______ change.
The change of state of a substance from solid to liquid and liquid to gas is ______.
