Ch. 1 Some Basic Concepts of Chemistry - JEE - CBSE Class XI - Revision Problems

http://schools.aglasem.com/58729


http://www.topperlearning.com/study/cbse/class-11/chemistry/multiple-choice-questions/some-basic-concepts-of-chemistry/b101c3s2e23ch27

https://chemistry.boisestate.edu/richardbanks/inorganic/mc101/mcquestions101.htm


http://www.studiestoday.com/mcq-chemistry-cbse-class-11-chemistry-mcqs-some-basic-concepts-chemistry-213526.html


https://www.wiziq.com/online-tests/15047-iit-jee-aieee-aipmt-some-basic-concepts-of-chemistry-paper-1

http://www.targetpublications.org/download/neet-iseet/xi-neet-iseet-chemistry.pdf

http://ncert.nic.in/ncerts/l/keep501.pdf