876540
Pregunta 1
Pregunta
Which type of formula shows what is attached to each carbon atom in symbols?
Respuesta
-
Empirical formula
-
Structural formula
-
Displayed formula
Pregunta 2
Pregunta
Which type of formula shows organic molecules in diagrammatic form?
Respuesta
-
Empirical formula
-
Structural formula
-
Displayed formula
Pregunta 3
Pregunta
What is the functional group of alcohols?
Respuesta
-
R-OH
-
R-COO-R
-
R-COOH
Pregunta 4
Pregunta
What is the functional group of carboxylic acids?
Respuesta
-
R-OH
-
R-COO-R
-
R-COOH
Pregunta 5
Pregunta
What is the functional group of esters?
Respuesta
-
R-OH
-
R-COO-R
-
R-COOH
Pregunta 6
Pregunta
True or false? A homologous series is a set of organic compounds with the same functional group.
Respuesta
- True
- False
Pregunta 7
Pregunta
What is the main alcohol in alcoholic drinks?
Respuesta
-
Methanol
-
Ethanol
-
Propanol
-
Butanol
Pregunta 8
Pregunta
Which of these are uses of alcohols?
Respuesta
-
Beverages
-
Solvents in perfumes
-
Vinegars
-
Flavourings and scents in perfumes
Pregunta 9
Pregunta
True or false? Ethanol does not burn cleanly.
Respuesta
- True
- False
Pregunta 10
Pregunta
True or false? The reaction of sodium with alcohols is more vigorous than with water.
Respuesta
- True
- False
Pregunta 11
Pregunta
How can we oxidise alcohols into carboxylic acids?
Respuesta
-
Reaction with potassium permanganate
-
Boiling with acidified potassium dichromate
-
Fermentation with yeast
-
Action of microbes in the air
Pregunta 12
Pregunta
Which of these are uses of carboxylic acids?
Respuesta
-
Beverages
-
Vinegars
-
Solvents in perfumes
-
Flavourings and scents in perfumes
Pregunta 13
Pregunta
Which of these are uses of esters?
Respuesta
-
Beverages
-
Vinegars
-
Solvents in perfumes
-
Flavourings and scents in perfumes
Pregunta 14
Pregunta
What two homologous series react to form esters?
Respuesta
-
Alkanes
-
Alkenes
-
Alcohols
-
Aldehydes
-
Ketones
-
Carboxylic acids
Pregunta 15
Pregunta
True or false? Carboxylic acids do not dissociate completely with H+ ions in solution and are weak acids.
Respuesta
- True
- False
Pregunta 16
Pregunta
Which acid is used as a catalyst when forming esters?
Respuesta
-
Hydrochloric acid
-
Acetic acid
-
Sulphuric acid
-
Nitric acid
Pregunta 17
Pregunta
Which of these are negative consequences of alcohol usage?
Respuesta
-
Cirrhosis of the liver
-
Slowed reaction times
-
Muscular atrophy
-
Increased violent behaviour
Pregunta 18
Pregunta
Why is it difficult to distil ethanol from methylated spirits?
Respuesta
-
Methylated spirits contain only 0.01% ethanol
-
Methylated spirits contain many compounds with similar boiling points
-
Methylated spirits do not distil very well
Pregunta 19
Pregunta
True or false? Ethanol cannot be used as a biofuel.
Respuesta
- True
- False
Pregunta 20
Pregunta
True or false? Some people are opposed to biofuels as they argue that the land needed could be better used for food.
Respuesta
- True
- False
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