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
A particle may be
- atom only
- molecule only
- charged
- atom and molecule
In Na2CO3.10H2O, percentage of oxygen is
- 0.1678
- 0.1608
- 0.1659
- 0.1684
Factors affecting the speed of reaction include
- volume of gas
- change in mass
- pressure
- temperature change
Conventionally, the negative terminals are shown as a
- long thin line
- short fat line
- long wavy line
- short wavy line
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
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