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प्रश्न
Wood to sawdust:______:: Wood to Ash: Chemical change
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उत्तर
Wood to sawdust: Physical change. :: Wood to Ash: Chemical change
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संबंधित प्रश्न
Write short answer.
Give an example of desirable change which can also be undesirable
What role does energy play in initiating a chemical change ?
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
State whether the following is physical or chemical changes.
glowing of a bulb -
State whether the following is physical or chemical changes.
shaping a piece of glass —
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Give the reason why the following is considered as chemical changes.
A piece of magnesium strip is dropped into a beaker containing dilute hydrochloric acid.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Tearing of sheet of paper into pieces is ______ By the process of Heating of water, change.
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
