O Level Chemistry Practice Test 137

Periodic Table: O Level Chemistry Quiz Questions PDF - 137

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Chemistry Quiz: Periodic Table: O Level Chemistry MCQs PDF Download - 137

MCQ: The same number of shells are found in elements of

A) same group

B) same period

C) same type

D) same mass number

MCQ: What is true about hydroxonium ions (H₃O⁺)?

A) they can only exist in water

B) they are lesser ionic

C) they are highly covalent

D) none of above

MCQ: Examples of conductors include

A) mercury

B) Diamond

C) sulphur

D) phosphorus

MCQ: Acids react with metal carbonates to form

A) salt, water, hydrogen gas

B) salt, water, CO₂

C) salt and gas only

D) salt and water only

MCQ: Electrolysis can be useful for

A) electroplating

B) electro refining

C) electro coating

D) none of above

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