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IGCSE O Level Chemistry Exam Prep: Mock Test 28

Chemical Symbols Multiple Choice Questions (MCQs) PDF Download - 28

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The MCQ: All of these radicals have a valency of 1, except; "Chemical Symbols" App (Free Android & iOS) with answers: co3, oh, hco3, and no3 for GRE subject test tutoring. Practice Chemical Formulae and Equations Questions and Answers, Google eBook to download free sample for ACT subject tests.

Chemical Symbols MCQ Quiz with Answers PDF Download: Test 28

MCQ: 136

All of these radicals have a valency of 1, except

  1. OH
  2. CO3
  3. NO3
  4. HCO3
MCQ: 137

The phase that never gains in sublimation is

  1. solid
  2. liquid
  3. gas
  4. vapors
MCQ: 138

Elements with 1-3 valence electrons are called

  1. metals
  2. non-metals
  3. inert gases
  4. amphoteric oxides
MCQ: 139

Sublimations are the substances which do not exist

  1. at room temperature
  2. in liquid state at ordinary pressures
  3. in gaseous form at room temperatures
  4. in gaseous form at ordinary pressures
MCQ: 140

Upon heating, sodium nitrate NaNO3(s) gets converted into

  1. sodium oxide
  2. nitric acid
  3. sodium hydrogen oxide
  4. none of above

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