Test
Alcohols (Unit 2.7) AS level chemistry
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Preguntas del test (14)
1Which of these best describes an alcohol?
- AA homologous series where one hydrogen atom is replaced by an OH group.
- BA heterologous series where one hydrogen atom is replaced by an OH group.
2What is the definition of 'homologous series'?
- AA group of chemicals with similar properties that can be represented by a general formula.
- BA group of chemicals that have the exact same properties and formula.
3Which of these are characteristics of a homologous series?
- AThe members of the homologous series have the same functional group
- BThe members of the homologous series always contain ethene.
- CThe members of the homologous series share a specific formula.
- DThe members of the homologous series share a general formula.
- EThe members of the homologous series have a common general method of preparation.
- FThe members of the homologous group all have low melting points.
- GThe members of the homologous group have similar chemical properties.
4There are [blank_start]two[blank_end] main processes involved in the [blank_start]industrial[blank_end] preparation of ethanol. [blank_start]Hydration[blank_end] of ethene involves [blank_start]cracking[blank_end] hydrocarbons produced from [blank_start]petroleum.[blank_end] Ethene then reacts with [blank_start]steam[blank_end] to produce ethanol. Another method is called [blank_start]Fermentation[blank_end] which involves [blank_start]sugars[blank_end] being converted into ethanol.
- Atwo
- Bindustrial
- CHydration
- Dcracking
- Epetroleum.
- Fsteam
- GFermentation
- Hsugars
5The reaction between an alcohol and a [blank_start]carboxylic acid[blank_end] gives an [blank_start]ester[blank_end]
- Acarboxylic acid
- Bester
6The ideal conditions for hydration of ethene is a temperature of [blank_start]300[blank_end] and pressure of [blank_start]60-70[blank_end] atmospheres.
- A300
- B200
- C420
- D137
- E60-70
- F70-80
- G30-40
- H90-100
7With regards to temperature to complete hydration of ethene, which statement is true?
- AA higher yield of ethanol would be produced at lower temperatures
- BA higher yield of ethanol would be produced at higher temperatures
- CThe temperature has no effect on the yield of ethanol produced
8[blank_start]High[blank_end] pressure leads to a high yield of ethanol.
- AHigh
9Which of these is missing from the end of this formula representing hydration of ethene? CH2 = CH2(g) + H2O(g) <>
- ACH2CH2OH(g)
- BCH3CH2OH(g)
- CCH4CHOH(g)
10Which of these better depicts the definition of a functional group?
- Aspecific groupings of atoms within molecules that have their own characteristic properties, regardless of the other atoms present in a molecule.
- Bspecific groupings of atoms within molecules that have their own characteristic properties, based of the number of carbons present
11Which of these molecules is the functional group.
- AChlorine
12Label this diagram of fractional distillation. The method of which alcoholic drinks are produced (fermentation)
- AThermometer
- Bout
- Cin
- Dbunsen burner
- Eround-bottom
- Ffractionating
- GGlass beads
- HCondenser
13The boiling temperature of ethanol is [blank_start]80[blank_end] degrees and therefore to separate it from an aqueous mixture, [blank_start]fractional distillation[blank_end] is needed.
- A80
- Bfractional distillation
14Ideal conditions for fermentation include...
- Asugar, warm place and a yeast catalyst
- Bcold place and a yeast catalyst
- Cglucose, warm place and a yeast catalyst
Información
- Descripción
- AS level Chemistry Test sobre Alcohols (Unit 2.7) AS level chemistry , creado por jodie davies el 07/02/2021.
- Autor
- jodie davies
- Idioma
- English
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- 64
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