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प्रश्न
Fill in the blank
Revolution of the earth around the sun is a ________ change.
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उत्तर
Revolution of the earth around the sun is a natural periodic change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Which of the following are chemical changes?
- Growth of a plant
- Rusting of iron
- Mixing of iron fillings and sand
- Cooking of food
- Digestion of food
- Freezing of water
- Burning of candle
Fill in the blank.
A new substance is formed in a ............... change.
State whether the following is physical or chemical changes.
burning of sugar —
Define a chemical change. Give two examples of the above changes.
Fill in the blank.
The process of a liquid changing into a solid is called ________
What will you take into account while identifying the following?
A chemical change in a substance.
Differentiate between a physical change and a chemical change with reference to – Energy change taking place during the respective change.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
Water is known as a universal solvent. Why?
