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प्रश्न
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
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उत्तर
When a candle burns, wax melts. Melting of wax is a physical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
Write short answer.
Name two reversible changes.
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
State whether the following is physical or chemical changes.
respiration in living beings —
Photosynthesis cannot take place at night.
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
