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प्रश्न
Write true or false
Deforestation is a man-made change.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Ripening of fruits is a desirable change.
Write short answer.
Sublimation is classified as a physical change. Why ?
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
A physical change is temporary. Explain.
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
What is a chemical change ? Give two examples of chemical changes.
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.
