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प्रश्न
Select the chemical changes from the following list of changes
Drying of a fruit
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उत्तर
Drying of fruit is PHYSICAL change as composition remains the same and only state changes, no new substance with new properties is produced.
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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.
Tick the most appropriate answer.
Photosynthesis requires
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
Classify the following as a physical or a chemical change.
Butter getting rancid
Change is the law of nature and occurs in our everyday life, at all times and in all places. Differentiate between the following change with a suitable example.
Desirable and undesirable change.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
______ is the Universal Solvent.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
Match the items of Column I with the items of Column II.
| Column I | Column II | ||
| (a) | Large crystals | (i) | Turns lime water into milky |
| (b) | Depositing a layer of zinc on iron | (ii) | Physical change |
| (c) | Souring of milk | (iii) | Rust |
| (d) | Carbon dioxide | (iv) | Sugar candy (Mishri) |
| (e) | Iron oxide | (v) | Chemical change |
| (f) | Dissolving common salt in water | (vi) | Galvanisation |
A physical change is generally____________.
