piyusha1234 piyusha1234

10-02-2015
Environmental Sciences

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guess me the working topics for exhibition

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garima9cr3 garima9cr3

10-02-2015

u can make models on rainwater harvesting , volcano , thermal power plant..!!

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vanshikachoudhary vanshikachoudhary

10-02-2015

You could make an fire alarm you would need a board a resistent a transistor a capiciter a buzzer and a sensor firstly attach the resistent transitor and capiciter to the board and then attach there sensor buzzer and battery

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