IGCSE O Level Chemistry MCQs – Practice Test 26 (Chapter 3)

Chemical Formulae and Equations MCQ with Answers PDF – Download Test 26

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The "Chemical Formulae and Equations MCQ" App Download (iOS & Android): All of these radicals have a valency of -1, except; MCQ with answers: so₄, oh, no₃, and hco₃. Practice Acids: Properties & Reactions Quiz Questions, download Apple Book (Free Chapter) to strengthen chemistry virtual pathways.

Chemical Formulae & Equations MCQ PDF Download – Practice Test 26

MCQ 126: Which of the following is correct about an ionic equation chemical reaction?

it symbolically represents all ions in the solution
the states of reactants and products are mentioned as transcripts
the aqueous elements are shown as the ions it produces in solution
none of above

MCQ 127: All of these radicals have a valency of -1, except:

OH
SO₄
NO₃
HCO₃

MCQ 128: Formula of Calcium Nitride (Ca₃N₂) is:

Ca₃N₅
Ca₃NO₂
Ca₃N₂
Ca₂N₅

MCQ 129: Natural gas consists of:

methane
ethane
propane
butane

MCQ 130: Consider the chemical reaction ZnCO₃ + HNO₃ → Al(NO₃)₃ + H₂O, number of HNO₃ molecules required for a balanced equation will be:

IGCSE O Level Chemistry Notes App & e-Book – Chemical Formulae & Equations Exam Prep

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