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(Molar mass of Fe= 56 g mol–1), 0.02×vol×61000=3×0.288144×100\frac{0.02\times vol\times 6}{1000}=3 \times \frac{0.288}{144}\times 10010000.02×vol×6​=3×1440.288​×100. JEE Main Previous Year Papers: If you are looking for JEE Main previous year question papers, then you have come to the right place.As the JEE Main 2021 official notification has been announced, candidates must start their exam preparation right away. **This app is completely free!!! By solving JEE Main January 2020 chapterwise questions with solutions will help you to score more in your IIT JEE examination. 22. Newer Post Older Post Home. The solutions provided here have been extensively prepared by our subject-matter experts keeping in mind all the latest developments in the entrance exam. The PDF provided below contains JEE Main Chemistry Important Questions. 16. JEE Main 2020 Exam Analysis. This PDF below consists of the chemistry important questions for Jee Mains. 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