Chemistry 5070/11 — October/November 2012

Cambridge O-Level · Multiple Choice · answer key with instant marking and worked solutions

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Topics Atoms, Elements and Compounds · Chemistry of the Environment · Organic Chemistry · Metals · Acids, Bases and Salts · Experimental Techniques and Chemical Analysis · +6 more

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Q11MExperimental Techniques and Chemical AnalysisFree sample

It is suspected that a lollipop contains traces of a poisonous green dye (boiling point $73\,^\circ\text{C}$ ) as well as two harmless orange and red dyes (boiling points $69\,^\circ\text{C}$ and $73\,^\circ\text{C}$ respectively).

What is the best method by which the green dye may be detected?

Options

A filtration
B fractional distillation
C paper chromatography
D recrystallisation

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39 more questions

Q2Atoms, Elements and Compounds1M
Q3Experimental Techniques and Chemical Analysis1M
Q4States of Matter1M
Q5Experimental Techniques and Chemical Analysis1M
Q6Atoms, Elements and Compounds1M
Q7Atoms, Elements and Compounds1M
Q8Stoichiometry1M
Q9Atoms, Elements and Compounds1M
Q10Atoms, Elements and Compounds1M
Q11Atoms, Elements and Compounds1M
Q12Stoichiometry1M
Q13Electrochemistry1M
Q14The Periodic Table1M
Q15Chemistry of the Environment · Chemical Energetics1M
Q16Chemical Reactions · Metals1M
Q17Acids, Bases and Salts1M
Q18Acids, Bases and Salts1M
Q19Chemical Reactions1M
Q20Acids, Bases and Salts1M
Q21Chemistry of the Environment1M
Q22The Periodic Table1M
Q23Chemistry of the Environment1M
Q24The Periodic Table · Metals1M
Q25Metals1M
Q26Metals1M
Q27Metals1M
Q28Chemistry of the Environment1M
Q29Acids, Bases and Salts1M
Q30Experimental Techniques and Chemical Analysis1M
Q31Stoichiometry1M
Q32Acids, Bases and Salts1M
Q33Organic Chemistry1M
Q34Chemistry of the Environment1M
Q35Organic Chemistry · Stoichiometry1M
Q36Organic Chemistry1M
Q37Organic Chemistry1M
Q38Chemistry of the Environment1M
Q39Organic Chemistry1M
Q40Organic Chemistry1M

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