Class 9 Chemistry MCQs App Download | Ions and Free Radicals MCQs e-Book PDF
Class 9 Chemistry MCQs (Grade 9) From Textbook

Class 9 Chemistry MCQs – Certification Test 82

Ions and Free Radicals MCQs (Question 82) – App & e-Book Download

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MCQ 82: An oxide ion has -2 charge because:

  1. oxygen looses two electrons
  2. oxygen gains two electrons
  3. oxygen becomes neutral
  4. oxygen gains 3 electrons

Class 9 Chemistry MCQs App & e-Book – Ions and Free Radicals Certification Guide

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