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प्रश्न
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
विकल्प
True
False
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उत्तर
False.
Dissolving of solute in a solvent is a physical change and rusting of iron is a chemical change.
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संबंधित प्रश्न
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
State whether the following is physical or chemical changes.
glowing of a bulb -
State whether the following is physical or chemical changes.
mixing oil with water —
State whether the following is physical or chemical changes.
photosynthesis —
Tick the most appropriate answer.
Photosynthesis requires
Classify the following as physical or chemical change :
Condensation of steam
What is a chemical change ? Give two examples of chemical changes.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
