Class 9 Courses

Class 9 Chemistry App's Tests

Class 9 Chemistry e-Book's MCQs - Complete

Periodic Table App Quiz & e-Book Download - 6

MCQ:

Both elements of 1st period contain valence electrons in

  1. M shell
  2. N shell
  3. K shell
  4. S shell

Class 9 Chemistry App & e-Book Tests PDF Download

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Periodic Table App (Android & iOS)

Periodic Table App (Android & iOS)

9th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (iOS & Android)

College Chemistry App (Android & iOS)

College Chemistry App (Android & iOS)

A level Chemistry App (Android & iOS)

A level Chemistry App (iOS & Android)