Organic Chemistry quiz (Singapore N(A)-Level Science Chemistry, SEAB 5107) quiz

One with at least one carbon to carbon double bond

One that contains oxygen

One with only single carbon to carbon bonds

One that always contains a ring

Alkanes

Acids

Alcohols

Alkenes

Carbon dioxide and water

Carbon monoxide and water

Carbon dioxide and hydrogen

Soot and water only

$\text{CH}_4 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O}$

$\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}$

$\text{CH}_4 + \text{O}_2 \rightarrow \text{CO} + 2\text{H}_2$

$2\text{CH}_4 + \text{O}_2 \rightarrow 2\text{CO}_2 + \text{H}_2\text{O}$

Carbon dioxide

Hydrogen

Carbon monoxide

Oxygen

It uses more fuel

It needs more oxygen

It produces only water

The fuel is not fully oxidised

The orange colour disappears, becoming colourless

The orange colour stays the same

A white precipitate forms

The mixture turns blue

Decolourises it quickly

Leaves it orange because it does not react in the same way

Turns it blue

Forms a precipitate

They contain more hydrogen

They contain oxygen

They have a reactive carbon to carbon double bond

They are larger molecules

By burning sugar in air

By distilling crude oil

By electrolysis of water

By yeast acting on a sugar solution in the absence of air

Carbon dioxide

Oxygen

Hydrogen

Ammonia

As a metal for wiring

As a fuel and as a solvent

As an acid in batteries

As a fertiliser

Alkanes

Alkenes

Alcohols

Carbonates

To make the flame larger only

To stop the fuel from igniting

To cool the appliance

To ensure complete combustion and avoid toxic carbon monoxide