Advertisements
Advertisements
प्रश्न
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
उत्तर
When a candle burns, wax melts. Melting of wax is a physical change.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
An earthquake is a .................. change.
Write short answer.
Name two reversible changes.
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Fill in the blank
Changes that occur in nature are called ______
Fill in the blank
Heat is ________ by a gas during the process of condensation.
Classify the following as a physical or a chemical change.
Drying of wet clothes
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change.
Give a reason why – Rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
