IGCSE O Level Chemistry MCQs (O Level) From Textbook

Atoms and Elements Notes App Free Download | IGCSE O Level Chemistry e-Book PDF

IGCSE O Level Chemistry Competitive Exam MCQs – Mock Test 171

Atoms and Elements Notes Questions with Answers PDF Download – Test 171

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The Atoms and Elements Notes Questions and Answers PDF (Atoms and Elements Quiz Answers PDF e-Book) download Ch. 6-171 to study IGCSE O Level Chemistry Practice Tests. Learn Elements, Compounds and Mixtures MCQ Questions PDF, Atoms and Elements Multiple Choice Questions (MCQ Quiz) to learn online GCSE courses. Download Atoms and Elements Notes App: Free IGCSE O Level Chemistry App to study atoms and elements, acidity or alkalinity, molecules and covalent bonds, dissolving, filtering and evaporating test prep for online colleges for teaching.

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Atoms & Elements MCQs – Mock Test 171 PDF Download

MCQ: 851

The most common element in the air is

  1. hydrogen
  2. nitrogen
  3. oxygen
  4. carbon
MCQ: 852

Each color is associated with a particular pH in

  1. litmus indicator
  2. universal indicator
  3. methyl orange indicator
  4. Phenolphthalein indicators
MCQ: 853

In Oxygen molecule (O2), stability is gained through sharing of

  1. one electron
  2. two electrons
  3. three electrons
  4. four electrons
MCQ: 854

Crystallization is used to purify

  1. sugar only
  2. fertilizers only
  3. salt from solution
  4. sugar and fertilizers
MCQ: 855

The melting point of the diamond is

  1. 340 °C
  2. 3400 °C
  3. 370 °C
  4. 3700 °C

Atoms & Elements Competitive Exam – IGCSE O Level Chemistry App & eBook Notes

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