Advertisements
Advertisements
प्रश्न
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
Advertisements
उत्तर
Iron III oxide [Fe2O3x H20]
APPEARS IN
संबंधित प्रश्न
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Write short answer.
What are man-made changes ?
How do you say that the process of digestion is a chemical change ?
True or false
Is melting of ice a reversible change?
Match the columns.
| Column A | Column B |
| 1. a change which cannot be easily reversed | a. man-made change |
| 2 a change that repeats itself at regular intervals | b. chemical chang |
| 3. a change that is made by humans | c. physical change |
| 4. a change in which the original substance cannot be obtained | d. periodic change |
| 5. a change where no new substance is formed | e. irreversible change |
| f . slow change |
Select the chemical changes from the following list of changes
Drying of a fruit
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Cutting a log of wood into pieces is a chemical change.
Iron pipes coated with zinc do not get rusted easily.
