IGCSE O Level Chemistry Practice Test 20
Proton and Nucleon Number Multiple Choice Questions (MCQs) PDF Download - 20
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Proton & Nucleon Number MCQ Quiz with Answers PDF Download: Test 20
If the number of protons and electrons are 8 respectively, the valence electrons are
- 2 in number
- 4 in number
- 6 in number
- 8 in number
The chemical formula of Caustic soda is
- NaOH
- KOH
- MgO
- Ca(OH)2
The difficulty of discharge is lowest in
- Chloride ions
- Bromide ions
- hydroxide ions
- sulphate ions
The substance is treated both as a radical and an element. It is
- sulphate
- hydrogen
- carbonate
- Phosphorus
What is true about oxidizing agents?
- they are mostly non-metals
- they are mostly metals
- their oxidation state decreases
- they are mostly transition metals
IGCSE O Level Chemistry Exam Prep Tests
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