IGCSE O Level Chemistry Practice Test 20

Proton and Nucleon Number Multiple Choice Questions (MCQ) PDF - 20

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Proton & Nucleon Number Questions and Answers PDF Download: Quiz 20

MCQ 96: 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

MCQ 97: The chemical formula of Caustic soda is

NaOH
KOH
MgO
Ca(OH)₂

MCQ 98: The difficulty of discharge is lowest in

Chloride ions
Bromide ions
hydroxide ions
sulphate ions

MCQ 99: The substance is treated both as a radical and an element. It is

sulphate
hydrogen
carbonate
Phosphorus

MCQ 100: What is true about oxidizing agents?

they are mostly non-metals
they are mostly metals
their oxidation state decreases
they are mostly transition metals

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