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WorksheetsC5 CONSUMER AND INDUSTRIAL CHEMISTRY
Total questions: 20
Worksheet time: 10mins
Margarine, butter and ghee are examples of __________.
fat
protein
hydrocarbon
polymer
Which of the following is the functional group for fat?
carbon-carbon double bond
hydroxyl group
carboxylate group
Which cation forms white precipitate when added into a soap solution?
Ca2+
Zn2+
NH4+
Ag+
what is the main source in the production of detergent?
palm oil
animal fat
ammonia
petroleum
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
name the process of soap preparation
hydrolysis
soapication
sulphonation
saponification
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
A student finds out there is a blood stain on his shirt.
Which additives in the detergent will help to remove this type of stain?
Biological enzyme
Foam control agent
Suspension agent
Optical whitener
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
Monosodium glutamate(MSG) is a flavouring agent. The addition of MSG in children’s food is not encouraged. Why?
Damaged the brain development in children
Appearance of black spot on the skin
Reduce the body immunization towards disease
Making the children become hyperactive
sodium chloride is added to fish to produce salted fish.
which of the following is the main function of sodium chloride?
replace the original fishy taste lost during processing
improve taste and freshness
prevent oxidation so that it does not turn rancid
it draws out water in order to inhibit the growth of bacteria
diagram shows the ingredients in mango-flavoured ice cream.
which of the following is used as stabiliser X?
salt
lecithin
tartrazine
sodium citrate
a two years old child has a fever. her mother took the child to a doctor.
which medicine will the doctor prescribe to the child?
aspirin
barbiturate
penicillin
paracetamol
amoxicillin is a medicine that has the same function as penicillin.
what is its function?
relief pain
treat psychotic patient
treat bacterial infections
stimulate the body to produce antibody
which of the following is correct about saponification?
reaction of ester with alkali
reaction of alkene with water
reaction of alkane with chlorine
reaction of alcohol with carboxylic acid
Which of the following is an example of soap?
Potassium chloride
Potassium carbonate
Potassium laurate
Potassium sulphate
Alkaline solution used in the saponification process includes
potassium hydroxide
sodium hydroxide
lead(II) hydroxide
zinc hydroxide
Scum formation occurs when soaps are used in
acidic water
soft water
hard water
distilled water
In the preparation of detergents, step 1 involves the conversion of long-chain alcohol to sulphonic acid. What is the substance that reacted with the alcohol?
Concentrated sulphuric acid
Concentrated nitric acid
Concentrated sodium hydroxide
Concentrated potassium hydroxide
