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IGCSE A Level Chemistry Practice Test 240

Elements and Atoms MCQ Questions and Answers PDF - 240

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Elements and Atoms MCQ with Answers PDF Download: Quiz 240

MCQ 1196: The most composition of sun is mainly

A) oxygen and hydrogen
B) hydrogen
C) hydrogen and helium
D) helium

MCQ 1197: A sigma bond (σ-bond) is formed when

A) p-orbital overlaps with another p-orbital
B) s-orbital overlaps with another s-orbital
C) p-orbital overlaps with a s-orbital
D) d-orbital overlaps with f-orbital

MCQ 1198: Collision theory helps to explain the effects of

A) concentration
B) temperature
C) surface area
D) all of above

MCQ 1199: Sodium reacts vigorously with

A) water
B) metals
C) gases
D) none of above

MCQ 1200: Excess acids in the stomach can be neutralized through

A) Ca(OH)2
B) Mg(OH)2
C) MgO
D) CaO

IGCSE A Level Chemistry Exam Prep Tests

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