IGCSE O Level Chemistry Competitive Exam MCQs – Mock Test 3

Molecules and Macromolecules Notes Questions with Answers PDF Download – Test 3

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Download the "Molecules & Macromolecules Notes" App (iOS & Android): Melting point of silica (SiO₂) is; MCQ with answers: 1660 °c, 1650 °c, 1760 °c, and 1700 °c. Study Chemical Bonding and Structure Questions and Answers, Apple Book to download free chapter to strengthen chemistry virtual mobility.

Molecules & Macromolecules MCQs – Mock Test 3 PDF Download

MCQ 11: Melting point of silica (SiO₂) is:

1650 °C
1660 °C
1700 °C
1760 °C

MCQ 12: All are ionic compounds except:

AgCl
HNO₃
NO₂
(NH₄)₂CO₃

MCQ 13: Potassium Oxide is formed through:

two potassium ions and one oxygen ion
one potassium ion and one oxygen ion
two potassium ions and two oxygen ion
one potassium ion and two oxygen ion

MCQ 14: Molecular weight of propane (C₃H₈) is:

44.095 g/mol
40.01 g/mol
41.01 g/mol
46.02 g/mol

MCQ 15: Evaporation occurs only:

after boiling
after extreme cooling
at the surface of a liquid
if boiling occurs at atmospheric pressure

IGCSE O Level Chemistry Notes App & eBook – Molecules & Macromolecules Competitive Exam

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