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प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
पर्याय
Physical change
Chemical change
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उत्तर
Chemical change
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संबंधित प्रश्न
Write short answer.
Name two reversible changes.
State whether the following is physical or chemical changes.
lightning —
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Write true or false
Rusting of iron is 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.
Select the chemical changes from the following list of changes
Rotting of eggs.
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
Distinguish physical and chemical changes.
