(a(i))[2]
Use the information provided to work out how many carbon and hydrogen atoms are in J, showing your steps.
(a(ii))[1]
Use the details above together with your answer to (i) to identify the other element present in J.
(a(iii))[2]
Determine the structure of J, explaining how you arrived at your conclusion.
(b(i))[2]
Paper, thin-layer and gas-liquid chromatography use different physical principles to separate the parts of a mixture. Fill in the table by naming the principle on which each technique is based.
(b(ii))[1]
How many spots could be seen before solvent 2 was used?
(b(iii))[1]
Ring the spot that remained unmoved in solvent 2.
(b(iv))[1]
How many spots moved further in solvent 2 than in solvent 1?