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Krishna Raj

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Light emitting diode(LED)
How to energize and use ice breakers
Magnetic levitation(kr)
MAGNETISM,EARTH MAGNETIC FIELD
Technical inovation in mechanical field
Technological disaster
Newton's laws of motion (krishnaraj)
RAILWAY RESERWATION PROJECT
Diversityinlivingorganisms for class 9 by kr
Loops IN COMPUTER SCIENCE STANDARD 11 BY KR
Indian nobel prize winners
Information technology
Transport
Introduction to trignometry