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The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of o...

Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.

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wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-s...

AdiChemistry: Online resource of chemistry study material

Careers360 Engineering portal gives you all the information on Engineering Colleges, Courses, Exams, Branches, Counselling and all you need to know th...