Cada pregunta de este test está cronometrada.
Which type of formula shows what is attached to each carbon atom in symbols?
Empirical formula
Structural formula
Displayed formula
Which type of formula shows organic molecules in diagrammatic form?
What is the functional group of alcohols?
R-OH
R-COO-R
R-COOH
What is the functional group of carboxylic acids?
What is the functional group of esters?
True or false? A homologous series is a set of organic compounds with the same functional group.
What is the main alcohol in alcoholic drinks?
Methanol
Ethanol
Propanol
Butanol
Which of these are uses of alcohols?
Beverages
Solvents in perfumes
Vinegars
Flavourings and scents in perfumes
True or false? Ethanol does not burn cleanly.
True or false? The reaction of sodium with alcohols is more vigorous than with water.
How can we oxidise alcohols into carboxylic acids?
Reaction with potassium permanganate
Boiling with acidified potassium dichromate
Fermentation with yeast
Action of microbes in the air
Which of these are uses of carboxylic acids?
Which of these are uses of esters?
What two homologous series react to form esters?
Alkanes
Alkenes
Alcohols
Aldehydes
Ketones
Carboxylic acids
True or false? Carboxylic acids do not dissociate completely with H+ ions in solution and are weak acids.
Which acid is used as a catalyst when forming esters?
Hydrochloric acid
Acetic acid
Sulphuric acid
Nitric acid
Which of these are negative consequences of alcohol usage?
Cirrhosis of the liver
Slowed reaction times
Muscular atrophy
Increased violent behaviour
Why is it difficult to distil ethanol from methylated spirits?
Methylated spirits contain only 0.01% ethanol
Methylated spirits contain many compounds with similar boiling points
Methylated spirits do not distil very well
True or false? Ethanol cannot be used as a biofuel.
True or false? Some people are opposed to biofuels as they argue that the land needed could be better used for food.