IGCSE O Level Chemistry Practice Test 171

Atoms and Elements Quiz PDF: Questions and Answers - 171

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Free Atoms and Elements Quiz Questions and Answers PDF, Atoms and Elements Quiz PDF Download, Book Test 6-171 to study igcse chemistry online courses. Study Elements, Compounds and Mixtures MCQ Questions PDF, atoms and elements Multiple Choice Questions (MCQ Quiz) for online college degrees. The Atoms and Elements Trivia App Download: Free educational app for 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.

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Atoms & Elements Questions and Answers PDF Download: Quiz 171

MCQ 851: The most common element in the air is

hydrogen
nitrogen
oxygen
carbon

MCQ 852: Each color is associated with a particular pH in

litmus indicator
universal indicator
methyl orange indicator
Phenolphthalein indicators

MCQ 853: In Oxygen molecule (O₂), stability is gained through sharing of

one electron
two electrons
three electrons
four electrons

MCQ 854: Crystallization is used to purify

sugar only
fertilizers only
salt from solution
sugar and fertilizers

MCQ 855: The melting point of the diamond is

340 °C
3400 °C
370 °C
3700 °C

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