Elucidation

Question 1

Compound exists as a mixture of two stereoisomers but contains no chiral centre

Answer 1

Compound contains an alkene functional group which exhibits cis and trans isomerism

Question 2

Compound does not exhibit stereoisomerism

Answer 2

Compound does not exhibit enantiomerism/cis-trans isomerism

Question 3

Compound is optically active/rotates plan-polarised light

Answer 3

Compound (likely) contains a chiral carbon

Question 4

Compound produces effervescence in the presence of Na2CO3

Answer 4

Compound undergoes neutralisation and contains the carboxylic acid functional group

Question 5

Compound reacts with hot acidified potassium manganate to form the other compound

Answer 5

Compound undergoes strong oxidation (safest option since side-chain oxidation might occur)/oxidative cleavage of the C=O/C=C bond.

There is a loss of ___
(varies case by case but state what is lost and what could be left eg. Could contain 2 terminal =CH2 present)

Question 6

Compound reacts with Na metal

Answer 6

Compound contains an -OH functional group

(applies to anything with an alcohol group)

Question 7

Compound reacts with hot acidified potassium manganate to liberate CO2

Answer 7

Compound has a terminal alkene.