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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
विकल्प
copper
aluminium
iron
gold
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उत्तर
iron
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Cutting a log of wood into pieces is a chemical change.
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Classify the following changes as physical or chemical: curdling of milk
Make a list of different types of changes with example.
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Photosynthesis cannot take place at night.
What are man-made changes ?
Which of the following are physical changes and which are chemical changes ?
Freezing of water
When solute is dissolved in a solvent it forms a solution.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
