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प्रश्न
Fill in the blank.
Growing of a seedling into a plant is _______ change.
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उत्तर
Growing of a seedling into a plant is chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
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.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Classify the following changes as physical or chemical.
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
Read the paragraph and note down the various types of changes it mentions.
It was nearing six o'clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil, and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lightning, too. Sahil was enjoying his dinner in the dim light.
Give a reason why – Addition of zinc nitrate to water is a physical change but, the addition of zinc to dilute nitric acid is a chemical change.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Cutting a log of wood into pieces is a chemical change.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
