Vastunisht rasayan vigyan for ssc, railway, & other competitive exams by rukmani publication
Introducing – रसायन विज्ञान Rukmani Publication(CHEMISTRY), 9500+ (हिन्दी संस्करण) For All Competitive Exams.RAILWAY, SSC, BSSC, STATE POWER CORPORATION, STATE POLICE, CTET, STET, BPSC, CSAT, ETC.