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प्रश्न
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
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उत्तर
- Making sugar solution is a physical change.
- A physical change is generally reversible.
- Grinding of wheat grain changes its size. It is a physical change.
- Iron benches kept in lawns and gardens get rusted. It is a chemical change because a new substance is formed.
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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
Chemical changes are accompanied by changes in energy.
Write short answer.
Give two examples of periodic changes
State whether the following is physical or chemical changes.
glowing of a bulb -
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
Classify the following as a physical or a chemical change.
Butter getting rancid
Is a change of state of matter – a physical or a chemical change. Give reasons.
______ is the substance that is dissolved in a solvent.
When solute is dissolved in a solvent it forms a solution.
Mention a few physical properties of a substance.
