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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
विकल्प
copper
aluminium
iron
gold
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उत्तर
iron
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संबंधित प्रश्न
Try segregating the things around you as pure substances or mixtures.
Write short answer.
Give an example of desirable change which can also be undesirable
What are reversible and irreversible changes ? Give one example for each.
State whether the following is physical or chemical change.
Digestion of food —
Write true or false
A natural change can also be a desirable change.
Distinguish between the following.
Physical change and chemical change
Select the chemical changes from the following list of changes
The occurrence of lightning.
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
Mention a few physical properties of a substance.
