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प्रश्न
Classify the following as a physical or a chemical change.
Melting of wax
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उत्तर
Physical change
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संबंधित प्रश्न
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
glowing of a bulb -
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Tick the most appropriate answer.
Physical changes are
Name two reversible changes.
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Change is the law of nature and occurs in our everyday life, at all times and in all places. Differentiate between the following change with a suitable example.
Desirable and undesirable change.
Select the chemical changes from the following list of changes
Rotting of eggs.
Wood to sawdust:______:: Wood to Ash: Chemical change
