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Worksheetssoap and detergent
Total questions: 11
Worksheet time: 6mins
what is the main source in the production of detergent?
palm oil
animal fat
ammonia
petroleum
a group of scouts go camping by the seashore. they have to do all their washing using sea water.
what is the suitable substance for them to wash their clothes effectively?
soap
bleach
detergent
antiseptic
a child spilled curry gravy on his school uniform. the stain was very hard to be removed after being washed with a type of detergent.
which additive should be added to a new detergent to make sure the stain can be removed?
protease
sodium silicate
sodium carbonate
fluorescent dyes
which of the following are used to make detergents?
I and II
II and III
III and IV
I and III
which cation present in hard water?
Mg2+
Zn2+
Pb2+
Sn2+
the effectiveness of cleansing action of soap is lower in hard water compared to in soft water.
which of the following explain the above statement?
soap is less soluble in hard water
soap dissociates partially in hard water
soap forms insoluble salt with calcium and magnesium ions
soap particles form complex ions with aluminium ion present in hard water
why sodium chloride used in preparation of soap?
to speed up the reaction to produce soap
to produce soap with foams easily
to reduce the solubility of soap
to make soap softer
name the process of soap preparation
hydrolysis
soapication
sulphonation
saponification
two cleaning agents, soap and detergent are used to wash clothes in sea water and river water.
which of the following pair is correct about the result obtained?
I and II
I and IV
II and III
III and IV
Which statement is correct about cleansing action of soap?
The hydrophilic part of soap molecules dissolves in water
Increases the surface tension of water
Soap molecules emulsify water
Reacts with acids to form salt
chemical equation below shows the process of saponification.
fat + _______ --> soap + ______________
choose the correct reactant(R) and product(P)
R-sodium hydroxide, P-water
R-potassium hydroxide, P-glycerol
R-sodium oxide, P-glycerol
R-fatty acid, P-RCOONa
