Class 10 Courses

Class 10 Chemistry App's Tests

Class 10 Chemistry e-Book's MCQs - Complete

Climatology MCQs App & e-Book Download - 217

MCQ:

Percentage of oxygen in the air is

  1. 0.78
  2. 0.21
  3. 0.0093
  4. 0.0004

Class 10 Chemistry App & e-Book Tests PDF Download

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Climatology App (Android & iOS)

Climatology App (Android & iOS)

10th Grade Chemistry App (Android & iOS)

10th Grade Chemistry App (iOS & Android)

O Level Chemistry App (Android & iOS)

O Level Chemistry App (Android & iOS)

9th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (iOS & Android)