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प्रश्न
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
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उत्तर
FeSO4 (Iron Sulphate)
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संबंधित प्रश्न
Name a chemical change which takes place in presence of:
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.
Given reason:
Burning of paper 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.
Ammonium chloride is also a sublimable solid. Give a reason why the sublimation of ammonium chloride involves a physical and a chemical change.
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.
Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change.
Select the chemical changes from the following list of changes
Change of seasons
Explain the characteristics of physical change with examples.
