Hydroxy Compounds

Compound T is tested with three reagents and gives the results shown.

What is compound T?

Options

A   $(\text{CH}_3)_2\text{CHCHO}$
B   $(\text{CH}_3)_2\text{CHCH}_2\text{OH}$
C   $\text{CH}_3\text{CH(OH)COCH}_3$
D   $(\text{CH}_3)_2\text{CHCOCH}_3$

Reagent X is added separately to 2-methylbutan-1-ol and 3-methylbutan-2-ol.

The visible results are different.

What is reagent X?

Options

A   $\text{Na}(\text{s})$
B   alkaline $\text{I}_2(\text{aq})$
C   $\text{PCl}_5$
D   acidified $\text{KMnO}_4$

Propan-2-ol can be converted into 2-chloropropane using reagent M followed by reagent N.

Which row is correct?

Options

An organic compound J reacts with an excess of sodium to produce an organic ion with a charge of –3. J reacts with an excess of $\text{NaOH}(\text{aq})$ to produce an organic ion with a charge of –1.

What is the structural formula of J?

Options

A   $\text{HOCH}_2\text{CH}(\text{OH})\text{CH}_2\text{CO}_2\text{H}$
B   $\text{HO}_2\text{CCH}(\text{OH})\text{CH}_2\text{CHO}$
C   $\text{HO}_2\text{CCH}(\text{OH})\text{CH}_2\text{CO}_2\text{H}$
D   $\text{HOCH}_2\text{COCH}_2\text{CHO}$

Which formula represents the organic compound formed by the reaction of propanoic acid with methanol in the presence of concentrated sulfuric acid as a catalyst?

Options

A   $\text{CH}_3\text{CH}_2\text{COCH}_3$
B   $\text{CH}_3\text{CH}_2\text{CO}_2\text{CH}_3$
C   $\text{CH}_3\text{CO}_2\text{CH}_2\text{CH}_3$
D   $\text{CH}_3\text{CH}_2\text{CH}_2\text{CO}_2\text{CH}_3$

Considering only structural isomers, what is the number of alcohols of each type with the formula $\text{C}_5\text{H}_{12}\text{O}$?

Options

Which compound cannot be oxidised by acidified potassium dichromate(VI) solution but does react with sodium metal?

Options

A   $(\text{CH}_3)_3\text{COH}$
B   $\text{CH}_3\text{COCH}_2\text{CH}_3$
C   $\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{OH}$
D   $\text{CH}_3\text{CH}_2\text{CH(OH)CH}_3$

Propanoic acid reacts with $\text{LiAlH}_4$ to give organic product P.

Methanoic acid reacts with organic product P, in the presence of a few drops of concentrated sulfuric acid, to give organic product Q.

What are the skeletal formulae of the two organic products?

Options

The compounds shown are all produced by plants.

Each compound is warmed with acidified $\text{K}_2\text{Cr}_2\text{O}_7$.

Which compound will give a different observation to the other three?

Options

Structural and stereoisomerism should be considered when answering this question.

How many alcohols with the molecular formula $\text{C}_5\text{H}_{12}\text{O}$ give a yellow precipitate with alkaline $\text{I}_2\text{(aq)}$?

Options

A   2
B   3
C   4
D   5