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

A) 2 in number

B) 4 in number

C) 6 in number

D) 8 in number

MCQ 97: The chemical formula of Caustic soda is

A) NaOH

B) KOH

C) MgO

D) Ca(OH)₂

MCQ 98: The difficulty of discharge is lowest in

A) Chloride ions

B) Bromide ions

C) hydroxide ions

D) sulphate ions

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

A) sulphate

B) hydrogen

C) carbonate

D) Phosphorus

MCQ 100: What is true about oxidizing agents?

A) they are mostly non-metals

B) they are mostly metals

C) their oxidation state decreases

D) they are mostly transition metals

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