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प्रश्न
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
पर्याय
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
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Write true or false for the statement
Decomposition of leaves is a fast change.
State whether the following is physical or chemical changes.
lightning —
Write true or false
Burning of paper and formation of curd are reversible changes.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
What will you take into account while identifying the following?
A physical change in a substance.
Compare the energy changes involved during a physical and a chemical change.
A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
