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Yogita Ingle 7 years, 10 months ago
Electroplating: (i) The process of depositing a layer of any desired metal on another material by means of electricity is called Electroplating .
(ii)The metal to be electroplated is made the cathode, while the anode is the other metal which has to be deposited on this metal. After passing electric current through the electrolyte, the metal from the anode is deposited on the cathode. It may be defined as copper plating or silver plating etc on the basis of metal which is used for plating of other metal.
(iii) It is most commonly used for protection of reactive metal surface from reaction of atmosphere.
Electrorefining:
(i) The process of refining a metal in an electrolytic cell is known as electrorefining.
(ii) Purified metal strip is used as cathode. Impure metal rod is used as anode. On passing current through the electrolyte, the impure metal from the anode is deposited on the cathode.
(iii) It is used in purification of copper from its ore.
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Yogita Ingle 7 years, 10 months ago
Animal husbandry is the practice employed to increase the production of animal products by livestock. Animal husbandry includes feeding, breeding, and disease control of livestock animals.
Advantages of animal husbandry:
As animal husbandry is scientific management of farm animals, it serves many uses for human beings.
• It helps in enhancing milk production.
• It increases egg production.
• It increases meat production.
• It increases fish production.
• It helps in proper management of agricultural wastes.
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The iris (plural: irides or irises) is a thin, circular structure in the eye, responsible for controlling the diameter and size of thepupil and thus the amount of light reaching the retina. Eye color is defined by that of theiris.
Posted by Simranpreet Kaur Kaur 7 years, 10 months ago
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Posted by Simranpreet Kaur Kaur 7 years, 10 months ago
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Yogita Ingle 7 years, 10 months ago
The following are the main differences between a real image and virtual image.
1.A real image can be caught on a screen whereas a virtual image cannot be caught on a screen.
2. A real image is always inverted whereas a virtual image is always erect.
3. A real image is formed when the rays of light after reflection or refraction actually meet at some point whereas a virtual image is formed when the rays of light after reflection or refraction appear to meet at a point.
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Yogita Ingle 7 years, 10 months ago
Both the plant and the animal cells contain the membrane-bound organelles like the nucleus, endoplasmic reticulum, mitochondria, Golgi apparatus, peroxisomes, lysosomes. They also have similar membranes such as cytosol, and the cytoskeletal elements. The function of all these organelles is said to be extremely similar lying between two classes of cells. However, few differences do exist between them which are very much significant, reflecting the difference in the function of each cell.
The plant cell can also be larger than the animal cell. The normal range of the animal cell varies from about 10 – 30 micrometers and that of plant cell range between 10 – 100 micrometers. Beyond the size, the main differences between the structures of plants and animal cells lie in some additional features that are found in the plant cells.
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Yogita Ingle 7 years, 10 months ago
The celestial objects appear to move across the sky from east to west because the earth is moving about its axis from west to east. It takes nearly 24 hours for the earth to complete one revolution about its axis from west to east, but to us it appears that our earth is stationary and the various objects in space are moving from east to west.
Posted by Aryan Pawaria 7 years, 10 months ago
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Leenaa Rosalin 7 years, 10 months ago
1Thank You