Question
Write short notes
Adulteration of food:
Adulteration of food:
✓
Answer
To earn more profits, cheaper substances of low quality called adulterants, are mixed with the foodstuffs. The mixing adulterants to foodstuffs is called adulteration of food. Adulterants may be poisonous or harmful and such food is impure and unfit for consumption.
Some of the adulterants added to foodstuffs are given below:
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- Take a transparent plastic bottle, a handful of soil, big stones, small stones, sand, some dry leaves and water.
- Cut off the upper tapering part of the bottle. Put the rest of the materials in the lower part and add water.
- Stir the mixture thoroughly and put it aside.
1. Obtain specimens of soil from various places and note the differences in the specimen with respect to colour, feel, texture and size of the particles.
2. Observe how much water is used and for what purposes it is used in your house for a whole day. Record it in a chart. Discuss this data and find out how much water each person needs in your house.
3. How does the mixture in the bottle look now?
[Chapatti, banana, carrot, butter, Nan, egg, bread, cheese, dal, spinach, milk]
Classify the following substances in the table given below.
(iron, wood, brick, paper, terylene, stone, jute, air, silk, utensils, plastic, rayon, water, wool, dacron, lac, nylon, pearl)
(iron, wood, brick, paper, terylene, stone, jute, air, silk, utensils, plastic, rayon, water, wool, dacron, lac, nylon, pearl)
Make a list of objects, each of which can be made from several substances.
1. Where does the river come from?
2. Where is the aeroplane?
3. Where are fishes seen?
1. Where do you see the birds?
2. Where is the cow grazing?
3. Locate the trees.
Animals: Honeybees, sharks, yaks, sheep, earthworms, dogs, bivalves, horses, mice.