IGCSE O Level Chemistry Practice Test 75

Paper Chromatography Quiz PDF: Questions and Answers - 75

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Paper Chromatography Questions and Answers PDF Download: Quiz 75

MCQ 371: In order to separate colors, dyes and amino acids, the useful method will be

A) crystallization

B) centrifugation

C) filtration

D) chromatography

MCQ 372: Factors affecting the speed of chemical reactions does not include

A) pressure on reactants

B) particle size of reactants

C) concentration of reactants

D) volume of reactants

MCQ 373: Adsorption refers to the

A) bounding of a substance to the surface of another substance

B) diffusion of one substance to the bulk of other substances completely

C) boiling of liquid at the surface

D) none of above

MCQ 374: What is true about Spectator ions?

A) they take active part in forming new products

B) they remain chemically unchanged in an ionic equation

C) they act as catalysts

D) they form suspensions in the liquid

MCQ 375: Al⁺³ indicates that

A) it needs -3 valency to become stable

B) it has high negative charge

C) Aluminum is found in Group-II

D) none of above

IGCSE O Level Chemistry Exam Prep Tests

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