IGCSE O Level Chemistry MCQs – Practice Test 2 (Chapter 3)

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The "Chemical Formulae and Equations MCQ" App Download (Android & iOS): All are covalent compounds except; MCQ with answers: so₃, no₂, so₂, and hno₃. Practice Chemical to Electrical Energy Quiz Questions, download Apple Book (Free Chapter) to improve chemistry mobility.

Chemical Formulae & Equations MCQ PDF Download – Practice Test 2

MCQ 6: Valency of carbonate ion CO₃⁻ is:

-1
-2
-3
-4

MCQ 7: All are covalent compounds except:

NO₂
SO₃
SO₂
HNO₃

MCQ 8: The empirical formula is the:

simplest formula
molecular formula
chemical formula
ionic exponential formula

MCQ 9: All of these radicals have a Valency of 2, except:

SO₄
CO₃
NH₄
MgCO₃

MCQ 10: The formula of hydrated Sodium Carbonate is:

Na(HCO₃)₂
Na₂CO₃.(H₂O)₅
Na₂CO₃.10H₂O
Na₃CO₄.10H₂O

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

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