WorksheetsHigher Chemistry - Unit 2 Revision
Total questions: 26
Worksheet time: 52mins
Which of the following compounds is a tertiary alcohol?
2,2-dimethylpropan-1-ol
2-methyl-butan-2-ol
pentan-2-ol
3-methylbutan-2-ol
A compound with molecular formula C6H12O2 could be
pentyl ethanoate
hexan-2-one
3-methylpentan-2-ol
hexanoic acid
Compound X reacted with hot copper(II) oxide and the resulting product did not give a colour change when heated with Fehling's solution.
Compound X could be
pentan-1-ol
pentan-2-ol
pentan-3-one
pentanoic acid
Which reaction can be classified as reduction?
methanol to methanoic acid
propanal to propanoic acid
butan-2-one to butan-2-ol
propan-2-ol to propanone
Which of the following is an isomer of pentan-3-ol?
CH3CH2CH(OH)CH2CH3
CH3CHCHCH2CH2OH
CH3CHCHCH(OH)CH3
CH3CH(CH3)CH2CH2OH
Oxidation of 4-methylpentan-2-ol to the corresponding ketone results in the alcohol
losing 2g per mole
gaining 2g per mole
losing 16g per mole
gaining 16g per mole
Essential amino acids are defined as the amino acids which
are necessary for building proteins
humans must acquire through their diet
plants cannot synthesise for themselves
are produced when any protein is hydrolysed
Which of the following fatty acids is the most saturated?
C15H29COOH
C15H31COOH
C17H31COOH
C17H35COOH
Which of the following is not a step in a free radical chain reaction
Activation
Initiation
Propagation
Termination
Which of the following is an isomer of ethyl propanoate (CH3CH2COOCH2CH3)?
methyl propanoate
pentan-2-one
pentanoic acid
pantane-1,2-diol
Essential oils are
non-water soluble, non-volatile compounds
non-water soluble, volatile compounds
water soluble, non-volatile compounds
water soluble, volatile compounds
vegetable oil ---> vegetable fat
Which of the following reactions brings about the above change?
hydrolysis
condensation
hydrogenation
dehydrogenation
Which of the following is the salt of a long-chain fatty acid?
Fat
Oil
Soap
Glycerol
Emulsifiers for use in food are commonly made by reacting edible oils with
esters
glycerol
fatty acids
amino acids
The table shows four compounds that contribute to the aroma of spices.
Which compound is not derived from a terpene?
A - C10H14O
B - C10H12O
C - C10H18O
D - C9H8O
A secondary amine has two carbon atoms directly bonded to the nitrogen atom.
Which of the following is a secondary amine?
Etythrose is a chemical that is known to kill cancer cells.
The two functional groups present in erythrose are
carboxyl and ester
carbonyl and ester
carbonyl and hydroxyl
carboxyl and hydroxyl
The name of this compound is
2,2,3-trimethylbutanoic acid
2,3,3-trimethylbutanoic acid
1,1,2,2-tetramethylpropanoic acid
2,2,3,3-tetramethylpropanoic acid.
What is the systematic name for this compound?
2,2,2-trimethylethanol
2,2-dimethylpropan-1-ol
2,2-dimethylpropan-3-ol
2,2-dimethylpentan-1-ol
The following molecules give flavour to food.
Which of the following flavour molecules would be most likely to be retained when the food is cooked in water?
Limonene is a terpene molecule found in lemons.
How may isoprene units are joined together in a limonene molecule?
1
2
3
4
Oil molecules are more likely to react with oxygen in the air than fat molecules.
During the reaction the oil molecules
are reduced
become rancid
are hydrolysed
become unsaturated
Which of the following mixtures will form when NaOH(aq) is added to a mixture of propanol and ethanoic acid?
Propanol and sodium ethanoate
Ethanoic acid and sodium propanoate
Sodium hydroxide and propyl ethanoate
Sodium hydroxide and ethyl propanoate
Oils contain carbon to carbon double bonds which can undergo addition reactions with iodine.
The iodine number of an oil is the mass of iodine in grams that will react with 100g of oil.
Which oil below is likely to have the lowest melting point?
Corn Oil - Iodine number 123
Linseed Oil - Iodine number 179
Olive Oil - iodine number 81
Soya Oil - Iodine number 130
When an oil is hydrolysed, which of the following molecules is always produced?
C17H35COOH
C17H33COOH
Enzymes are involved in the browning of cut fruit.
One reaction is shown in the diagram.
Which of the following correctly describes the reaction shown?
Oxidation
Reduction
Hydrolysis
Condensation
