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Worksheets16 May 2020 Sat Online Quiz Chemistry
Total questions: 20
Worksheet time: 10mins
Organic compounds are _______ compounds.
carbon
hydrogen
oxygen
inorganic
Combustion of an organic compound produces ______ and ____.
carbon dioxide, sunlight
carbon dioxide, water
carbon dioxide, soil
carbon dioxide, fertilizers
Hydrocarbons contains only __________ and hydrogen elements.
helium
iron
iodine
carbon
Hydrocarbons are divided into ___________ and ___________ .
saturated, unsaturated
oil, lipid
alcohols, saturated
alkene, unsaturated
The functional group of alkene is _______________.
hydroxyl group
carboxylate group
carbon-carbon double bond
carbonyl group
Alkenes undergo the following chemical reactions:
addition of hydrogen
addition of halogens
addition of hydrogen halides
addition of water
The following reagents are used to distinguish between alkane and alkene.
sodium chloride solution
sulphuric acid
bromine water
acidified potassium manganate (VII)
The functional group of alcohol is __________.
hydroxyl group
carbonyl group
carboxylate group
carbonyl group
Industrial preparation of ethanol:
fermentation of glucose
saponification
esterification
hydration of ethene
Simple alcohols are
colourless
volatile
liquids
soluble in water
Alcohols burn readily to form
carbon dioxide
water
oxygen
nitrogen
The functional group of carboxylic acid is
carboxyl group
carbonyl group
hydroxyl group
carboxylate group
The preparation of esters is through
esterification
saponification
dehydration
coagulation
The functional group of esters is
carboxylate group
hydroxyl group
carbonyl group
carboxyl group
Fats are formed from the reaction between
glycerol
water
fatty acids
alcohol
_______________ contain fatty acid chains with only carbon-carbon single bonds.
Unsaturated fats
Saturated fats
Natural rubber
Vulcanised rubber
The monomer of natural rubber is
isoprene
polyethene
polyisoprene
ethene
________ are added to speed up the coagulation of latex.
Alkalis
Acids
Ammonia solutions
Sodium hydroxide solution
________ prevent the coagulation of latex.
Acids
Sulphuric acid
Nitric acid
Alkalis
Vulcanised rubber is
stronger
more elastic
resistant to heat
resistant to oxidation
