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Quiz 8
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Q.1
Separation of fresh water from sea water can be done by the __________ operation.
Osmosis
Reverse osmosis
Absorption
Adsorption
Q.2
Bisphenol A is produced by the condensation of acetone with
Formaldehyde
Ethyl alcohol
Diethyl ether
Phenol
Q.3
Dacron is a/an
Polyester
Unsaturated polyster
Polyamide
Inorganic polymer
Q.4
Catalytic oxidation of naphthalene produces
Styrene
Phenol
Phthalic anhydride
None of these
Q.5
DDT stands for
Diethyl-diphenyl-trichloromethane
Dichloro-diphenyl-trichloromethane
Diphenyl-dichloro-trichloromethane
Dichloro-diphenyl-trichloroethane
Q.6
The catalyst used in the manufacture of DDT is
Alumina
Silica
20% oleum
Aluminium chloride
Q.7
Sulphuric acid saturated with SO₃ is called
Concentrated H₂SO₄
Sulphurous acid
Oleum
None of these
Q.8
Diaphragm electrolytic cell as compared to mercury electrolytic cell
Produces 70% NaOH solution
Requires less specific power consumption for the production of chlorine
Requires lesser investment for similar capacity
All of the above
Q.9
Pick out the wrong statement. Iodine value of an oil or fat is
The number of grams of iodine taken up by 100 gm of oil or fat
A measure of its unsaturation
Helpful in findings its adulteration & its suitability for making soap
Independent of the type of oil, whether it is drying or non-drying
Q.10
Presence of sodium tripolyphosphate (an additive) in synthetic detergent
Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
Inhibits its corrosive effects
Does not allow redeposition of dirt on the cleaned surface
None of these
Q.11
Commercial production of calcium carbide requires limestone and __________ as raw materials.
Coke
Sand
Soda ash
Fuel oil
Q.12
Paper pulp produced by kraft/sulphate process is
Bleached easily
Dull white in color
Strong fibrous
Dark colored
Q.13
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?
Depithing
Digestion
Bleaching
None of these
Q.14
Black liquor is converted into white liquor by
Evaporation and burning the concentrate followed by causticisation of products
Multi-effect evaporation only
Selective liquid extraction
Extractive distillation
Q.15
Trinitrotoluene (TNT), an explosive, is made by the nitration of
Nitrobenzene
Toluene
Nitrotoluene
Benzene
Q.16
Flash point of most vegetable oils is about __________ °C.
50
100
200
300
Q.17
Economics of 'Solvay Process' depends upon the efficiency of
Carbonating tower
Ammonia recovery
Ammonia recovery and size of the plant
Ammoniation of salt solution
Q.18
Nylon-6 as compared to Nylon-66 is having higher
Hardness
Abrasion/resistance
Melting point
None of these
Q.19
Main product in calcium carbide-water reaction is
Ca(OH)₂
C₂H₂
CO₂
CaCO₃
Q.20
CaCl(OCl) is the chemical formula of
Hypo
Bleaching powder
Plaster of paris
Aqua regia
Q.21
Celluloid is chemically
Cellulose acetate
Regenerated cellulose
Cellulose nitrate
Cellulose acetate butyrate
Q.22
Cement mainly contains
CaO, SiO₂, Al2O₃
MgO, SiO₂, K₂O
Al2O₃, MgO, FE₂O₃
CaO, MgO, K₂O
Q.23
The process involved in converting rubber into a thin sheet or coating it on fabric is called
Extrusion
Mastication
Calendering
Valcanisation
Q.24
Raw material used in alcohol distilleries in India is
Molasses
Benzol
Methylated spirit
None of these
Q.25
Use of hydrated lime in water treatment
Before filtration, reduces the bacterial load on filters
After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂
Is to adjust the pH value
All of the above
Q.26
The drug used in contraceptives is
Sulphadizene
Mestranol
Methyl salicylate
Pencillin
Q.27
Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on
Slaked lime
Soda lime
Calcium perchlorate
None of these
Q.28
Good quality of edible salt is obtained from brine by the process of
Solar evaporation
Vacuum evaporation
Freeze drying
Electrolysis
Q.29
Glycerine is a by-product of the __________ industry.
Soap
Detergent
Oil hydrogenation
Paint
Q.30
Sudden temperature fluctuation does not affect pyrex glass, because of its
Low co-efficient of expansion
High co-efficient of expansion
High melting point
Both B and C
Q.31
Carboxymethyl cellulose (CMC) is added in detergents to
Prevent redeposition of soil on cleaned surface
Act as optical brightening agent
Inhibit corrosion in washing machines made of aluminium
None of these
Q.32
Which of the following is used as a coagulant in water treatment?
Chloramine
Chlorine
Ferrous sulphate
Hydrogen peroxide
Q.33
Chemical formula of oleum is
H₂SO₃
H₂SO₄
H₂S₂O₇
H₂SO₇
Q.34
Chemical name of 'alum' is
Barium sulphate
Aluminium sulphate
Aluminium chloride
Calcium sulphate
Q.35
Fermentation of molasses to produce ethyl alcohol is done at __________ °C
20 - 30
< - 5
100 - 150
250 - 300
Q.36
The end bleaching agent used to move last traces of colour bodies from the pulp is
Chlorine dioxide (ClO₂)
MgO
SO₂ gas
Mercaptans
Q.37
Nitrile rubber is produced by the polymerisation of
Acrylonitrile and butadiene
Acrylonitrile and styrene
Isobutylene and isoprene
None of these
Q.38
Carborundum consists mainly of
Bauxite
Silicon carbide
Boron carbide
Calcium carbide
Q.39
CaSO₄ .1/2 H₂O is known as
Blue vitriol
Plaster of Paris
Gypsum
Zeolite
Q.40
Sand and __________ is fused at 1300°C, to produce sodium silicate.
Limestone
Soda ash
Coke
Sodium sulphate
Q.41
Ca(OH)₂ is called
Quicklime
Slaked lime
Limestone
Gypsum
Q.42
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
Surfactant
Builder
Optical brightening agent
Anti soil redeposition agent
Q.43
Starting material for the production of butadiene in India is
Naphthalene
Benzol
Ethyl alcohol
Phthalic anhydride
Q.44
Coal tar is used as a
Binding material for coal briquettes
Fuel in rotary kiln
Binder in making carbon electrodes
All of the above
Q.45
Chemical name of soda ash is
Sodium bicarbonate
Sodium thiosulphate
Potassium carbonate
None of these
Q.46
Bordeaux mixture is a/an
Fertiliser
Inorganic fungicide
Insecticide
Explosive
Q.47
The noble gas which occurs most abundantly in the atmosphere is
Helium
Neon
Krypton
Argon
Q.48
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
Poorer tensile strength
Poorer resistance to oxidation
Greater amount of heat build-up under heavy loading
All of the above
Q.49
The main product of high temperature carbonisation of coal is
Coke
Ammonia
Tar
Phenol
Q.50
Bakelite is
Same as poly tetrafluoroethylene (PTFE)
An inorganic polymer
Same as thermosetting phenol-formaldehyde
Not a polymer
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