IGCSE O Level Chemistry Practice Test 48

pH Scale: Acid and Alkali Multiple Choice Questions (MCQ) PDF - 48

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pH Scale: Acid & Alkali Questions and Answers PDF Download: Quiz 48

MCQ 236: Rainwater has a pH of

A) 1

B) 3

C) 5

D) 7

MCQ 237: Graphite is a conductor of electricity because

A) it has valence electrons

B) it is a metal form of Carbon

C) it is an allotrope of Carbon

D) none of above

MCQ 238: In Na₂CO₃, the relative atomic mass of Oxygen is

A) 12

B) 24

C) 36

D) 48

MCQ 239: Oil and water is an example of

A) miscible

B) impure substances may also form the crystals

C) filtrate

D) suspension

MCQ 240: The stronger the acid, the

A) less the hydrogen ions be

B) the more the hydrogen ions be

C) the more the covalence be

D) the more the hydroxyl ions

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