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IGCSE O Level Chemistry Competitive Exam: Mock Test 171

Atoms and Elements Notes Questions with Answers PDF Download - 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. The Atoms and Elements Notes App Download: Free IGCSE O Level Chemistry Notes App to study atoms and elements, acidity or alkalinity, molecules and covalent bonds, dissolving, filtering and evaporating, ionic and covalent substances test prep for online colleges for teaching.

The Quiz: The most common element in the air is; "Atoms & Elements" App (iOS, Android) with answers: nitrogen, hydrogen, carbon, and oxygen for online colleges for teaching. Study Elements, Compounds and Mixtures Questions and Answers, Apple Book to download free sample for colleges that offer online courses.

Atoms & Elements Quiz with Answers PDF Download: MCQs 171

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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Atoms and Elements Notes App (Android & iOS)

Atoms & Elements Notes App

O Level Chemistry Notes App (iOS & Android)

O Level Chemistry Notes App

SAT Chemistry Notes App (Android & iOS)

SAT Chemistry Notes App

10th Grade Chemistry Notes App (iOS & Android)

10th Grade Chemistry Notes App