IGCSE O Level Chemistry Practice 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, Apple e-Book 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

OH
CO₃
NO₃
HCO₃

MCQ: 137

The phase that never gains in sublimation is

solid
liquid
gas
vapors

MCQ: 138

Elements with 1-3 valence electrons are called

metals
non-metals
inert gases
amphoteric oxides

MCQ: 139

Sublimations are the substances which do not exist

at room temperature
in liquid state at ordinary pressures
in gaseous form at room temperatures
in gaseous form at ordinary pressures

MCQ: 140

Upon heating, sodium nitrate NaNO₃_(s) gets converted into

sodium oxide
nitric acid
sodium hydrogen oxide
none of above

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