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Fathima Naja Ak 3 years, 4 months ago
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Preeti Dabral 3 years, 4 months ago
Vitamin B1 helps the cells in the body convert food into energy. If you do not have enough vitamin B1 this process cannot work properly. You may have symptoms such as tiredness, loss of appetite and muscle weakness. Taking man-made thiamine helps restore normal levels of vitamin B1 in your body.
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Preeti Dabral 3 years, 4 months ago
1.Test the food item with a few drops of iodine solution on the food sample and observe. We can see that the part of food with iodine solution turns to a blue-black color. A blue-black color indicates the presence of starch.
2.If the substance turns the paper translucent (or slightly see-through), it contains fat.
3.The presence of proteins in food is tested in the following way:
- Step i - The food should be in either liquid form or in suspension form (used for solid food material)
- Step ii - Preparation of suspension -food material is crushed in mortar -pestle using water.
- Step iii - Take little sample in a test tube, to it add a few drops of oil caustic soda solution till the mixture clears.
- Step iv - Then add a few drops of copper sulphate solution and shake it well.
- Step v - Carefully heat the test tube over a flame. Hold the damp litmus paper over the mouth of the test tube and observe any colour change.
Presence of violet colour indicates the presence of protein in the food sample.
Posted by Akshiti Bhardwaj 3 years, 4 months ago
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Preeti Dabral 3 years, 4 months ago
There are two main processes of making fabric from fibre – weaving and knitting. Weaving: Weaving involves making fabric by arranging two sets of yarn. It is done using a machine called loom, which can be hand-operated or power- operated.
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Divyansh Sati 3 years, 4 months ago
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