WorksheetsS3 Chemistry Quizizz Online Quiz 1
Total questions: 20
Worksheet time: 10mins
The functional group of alcohol is
carbonyl group
hydroxyl group
carbon-carbon double bond
carboxylate group
Esters undergone the following chemical reactions
Hydrolysis of ester
Oxidation of ester
Reduction of ester
Addition Reaction (Hydrogenation)
The functional group of esters is called
carbonyl group
aldehyde group
carboxylate group
hydroxyl group
The ester molecule is made up of two groups:
acyl group
carbonyl group
hydroxyl group
alkoxy group
Examples of esters are
ethyl propanoate
propyl methanoate
methyl butanenoate
propyl ethanoate
To produce ester ethyl propanoate, we need
propanoic acid and ethanol
methanoic acid and ethanol
ethanoic acid and methanol
butanoic acid and propan-1-ol
Isomers of ester, methyl ethanoate include
methyl propanoate
methyl ethanoate
propanoic acid
butanoic acid
Ester has the following physical properties
density of ester is smaller than water
ester dissolves in organic solvents
wax is an ester formed from higher saturated acid and alcohol
there is hydrogen bonding between ester molecules
The process of making ester is called
hydration
hydrolysis
polymerisation
esterification
The catalyst used in the hydrogenation reaction of oils and fats is
iron
platinum
nickel
vanadium(v) oxide
The process of soap making is called
esterification
saponification
polymerisation
sulphonation
A soap molecule consists of two parts, namely
hydrophobic group, hydrolysis group
hydrolysis group, hydrophilic group
dehydration group, hydrophobic group
hydrophobic group, hydrophilic group
The general formula of ether is
R-O-R'
R-O-O-R'
R-C-O-O-O-R'
R-OH-O-R'
The physical properties of carboxylic acids are
carboxylic acids form hydrogen bond with water
carboxylic acids are liquids
pentanoic acid and higher members are 'waxy' solids
solid carboxylic acids are soluble in water
Carboxylic acids exist as stable dimers, and thus their boiling points are _______ when compared to alcohols with same molecular weights.
lower
much lower
moderate
much higher
The following reactions can be used to prepare carboxylic acids
oxidation of primary alcohols
oxidation of aldehydes
hydrolysis of cyanide compounds / nitriles
carbonation of Grignard reagents
The following are the chemical reactions undergone by carboxylic acids
formation of acyl chlorides
formation of amides
formation of anhydrides
neutralisation
Methanoic acid is also called
ethanoic acid
acetic acid
formic acid
lactic acid
Methanoic acid gives a positive test with Tollen's reagent. It gives a ____________ when warmed with Tollen's reagent.
gold mirror
bronze mirror
platinum mirror
silver mirror
The chemical name for lactic acid is __________.
α-hydroxypropanoic acid
α-hydroxybutanoic acid
α-hydroxypentanoic acid
α-hydroxyethanoic acid
