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प्रश्न
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
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उत्तर
CO2 carbon dioxide.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Write short answer.
Sublimation is classified as a physical change. Why ?
Make a list of different types of changes with example.
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
Define a chemical change. Give two examples of the above changes.
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.
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
