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Experiment to prove that the presence of air and water are essential for corrosion/rusting

PSR DIGITAL BOOKS 10TH TELUGU AND ENGLISH MEDIUM BOOKS ANOTHER SUBJECTS RELEASED AFTER BLUE PRINT.(PLEASE CHECK BACK SIDE OF QR’S WHOLE BOOK PDF AFTER BLUE PRINT .ALL GOOD BOOKS PLEASE WAIT EACH BOOK RS.60/. BELOW WITH QR’S )
1.HEAT LESSON 1 HOUR LESSON
HEAT TELUGU FULL LESSON
2.ACIDS,BASES AND SALTS

2ND LESSON IN TELUGU
3.REFRACTION OF LIGHT AT PLANE SURFACE 10TH CLASS PHYSICAL SCIENCE



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