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BY:SUJEET SIR . लेबल वाली पोस्ट दिखाई जा रही हैं

कार्बन तथा उसके योगिक,CARBON AND ITS COMPOUNDS,CLASS 10TH KA FOURTH CHAPTER NCERT ,(A RIVER CUTS THROUGH A ROCK NOT BECAUSE OF ITS POWER BUT ITS PERSISTENCE )BY:SUJEET SIR 8340763695 ARARIA BIHAR