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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
विकल्प
oxygen
hydrogen
nitrogen
water-vapour
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उत्तर
hydrogen
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Choose the most appropriate answer.
Rising and setting of the sun at a given place is a
True or false
Dissolving of a solid in liquid is a physical change.
Write true or false
A natural change can also be a desirable change.
Name two reversible changes.
State the Differences Between a Physical Change and a Chemical Change.
Classify the following as a physical or a chemical change.
Butter getting rancid
Differentiate between a physical change and a chemical change with reference to – Formation of products.
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
Select the chemical changes from the following list of changes
The carbon cycle.
