IGCSE O Level Chemistry Practice Test 35

Atoms and Elements Quiz Questions with Answers PDF Download - 35

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Atoms & Elements Quiz with Answers PDF Download: MCQs 35

MCQ 171:

A particle may be

atom only
molecule only
charged
atom and molecule

MCQ 172:

In Na₂CO₃.10H₂O, percentage of oxygen is

0.1678
0.1608
0.1659
0.1684

MCQ 173:

Factors affecting the speed of reaction include

volume of gas
change in mass
pressure
temperature change

MCQ 174:

Conventionally, the negative terminals are shown as a

long thin line
short fat line
long wavy line
short wavy line

MCQ 175:

In a titration, the color of the indicator can be removed by

not adding indicator in the beginning
repeating the process again
boiling the solution with some animal charcoal
none of above

IGCSE O Level Chemistry Exam Prep Tests

Redox Reaction: Oxidation MCQs

Making and Breaking Bonds MCQs

Valence Electrons MCQs

pH Scale: Acid and Alkali MCQs

Properties: Bases and Reactions MCQs

Dissolving, Filtering and Evaporating MCQs

Ionic and Covalent Substances MCQs

Change of State MCQs

Methods of Purification: Sublimation MCQs

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