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प्रश्न
Glass jars and bottles are dried well in the sun before filling them with pickles. Why is this done? Do you remember what happened to the bread in the experiment?
उत्तर
Glass jars and bottles are dried well in the sun to remove any moisture. In the experiment with bread, the bread got spoiled because of moisture and fungus grew on it.
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संबंधित प्रश्न
How did Aman know that the potato sabzi had got spoilt?
Preeti told Nitu not to eat the potato sabzi. What would have happened if she had eaten it?
Look at your friend’s list and discuss in the class.
Look carefully at two-three packets of food items:
When you buy anything from the market, what do you look for on the packet?
The whole class can do this experiment together. Take a piece of bread or roti. Sprinkle a few drops of water on it, and put it in a box. Close the box. See the bread or roti every day until you find some changes on it.
Make this table on chart paper and put it up in the classroom. Fill up the chart every day after discussing the changes seen.
| Day | Changes in the bread or roti | |||
| By touch | By smell |
By looking through hand lens |
By colour | |
| 1. | ||||
| 2. | ||||
| 3. | ||||
| 4. | ||||
| 5. | ||||
| 6. | ||||
Find out the reason for these changes. From where did the fungus come on the bread?
Given below are some food items and some simple methods by which these could be kept fresh for 1-2 days. Match the correct pairs:
| Food item | Methods |
| Milk | Put in a bowl and keep the bowl in a container with some water. |
| Cooked rice | Wrap in a damp cloth. |
| Green coriander (Dhania) | Boil it. |
| Onion, garlic | Keep it in a dry open place. |
Why was sugar and jaggery mixed into the mango pulp and dried in the sun?
Why did Appa first choose the most ripe mangoes to be used for making the mamidi tandra?
How are these things made in your house?
- Papad
- Chutney
- Badiyan
- Sauce
