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Paragraph on “Microwave Ovens” complete paragraph for Class 9, Class 10, Class 11 and Class 12

Microwave Ovens Various types of ovens are used for a variety of purposes but the latest addition to household appliances is the Microwave oven. Unlike gas and electric ovens, which cook or heat food by increasing the temperature, the Microwave ovens generate electromagnetic waves with the help of a magnetron tube. These waves agitate food molecules by inverting them, this disturbance results in friction thus causing the food to heat up...
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Paragraph on “Vacuum Cleaners” complete paragraph for Class 9, Class 10, Class 11 and Class 12

Vacuum Cleaners Vacuum cleaners are a common household appliance used for cleaning most surfaces. On the outside they comprise of a rectangular or oval body with a piece of flexible hose at one end connected to a snout used for sucking up dust. Inside the main body of a vacuum cleaner is a fan attached to a powerful motor. When switched on, this fan begins to suck in air through the...
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Paragraph on “Television” complete paragraph for Class 9, Class 10, Class 11 and Class 12

Television The modern television was made possible as a result of the developments in electronics in the twentieth century and it was largely developed by a Hungarian scientist called V.K.Zworykin between the years 1923 and 1939. The television set we have in our houses is basically a receiving unit for the images which are captured and transmitted by the T.V. Camera. The T.V. Camera sends the light from an image to...
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Paragraph on “Rockets” complete paragraph for Class 9, Class 10, Class 11 and Class 12

Rockets It is the age of the rockets today and it all began way back in China about 800 years ago, the Chinese used them initially as fireworks and then for war. Rockets first came to Europe and India in the middle of the thirteenth century. They were primarily used for war as a replacement for burning arrows, or for signalling. In the beginning of the nineteenth century a contingent of...
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