Advertisements
Advertisements
प्रश्न
Try segregating the things around you as pure substances or mixtures.
Advertisements
उत्तर
- Pure substance: Distilled water, diamond; graphite, gold, sulphur.
- Mixture: Curd, ice cream, kerosene oil, cooking oil, steel, vulcanised rubber, solder wire (an alloy of lead and tin).
APPEARS IN
संबंधित प्रश्न
Make a list of different types of changes with example.
Define physical change. Give two examples for the above changes.
State whether the following is physical or chemical change.
Digestion of food —
Give four difference between physical and chemical changes.
Change is the law of nature and occurs in our everyday life, at all times and in all places. Differentiate between the following change with a suitable example.
Desirable and undesirable change.
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Sublimation of Iodine is a ______.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Water is known as a universal solvent. Why?
