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Quiz 13
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Q.1
Nickel is not used as a catalyst in the __________ reaction.
Shift conversion
Oil hydrogenation
Steaming reforming of naphtha
Ammonia cracking/dissociation
Q.2
Which of the following is a detergent?
Fatty alcohol
Alkyl benzene sulphonate (ABS)
Fatty acids
Methylene chloride
Q.3
The main use of HCl is in the
Drilling of petroleum wells and pickling of steel sheets
Manufacture of cationic detergent
Treatment of spent fuel of nuclear reactor
None of these
Q.4
Sodium salt of higher molecular weight fatty acid is termed as the __________ soap.
Hard
Soft
Metallic
Lubricating
Q.5
Terylene is
Same as dacron
A polyester
Both A & B
Neither A nor B
Q.6
Triple superphosphate is manufactured by reacting
Phosphate rock with phosphoric acid
Phosphate rock with sulphuric acid
Phosphate rock with nitric acid
Ammonium phosphate with phosphoric acid
Q.7
Teflon is
Phenol formaldehyde
An inorganic polymer
Poly tetrafluoroethylene (P.T.F.E.)
A monomer
Q.8
In sulphate pulp manufacture, the pressure and temperature in the digestor is
10 atm., 800 °C
10 atm., 170-180°C
1 atm., 170 - 180°C
L atm., 800°C
Q.9
Glauber's salt is chemically represented by
Na₂SO₄.10H₂O
CaCl(OCl)
CaSO₄.H₂O
(NH₄)₂SO₄
Q.10
Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.
Drying
Semi-drying
Non-drying
None of these
Q.11
__________ is not a constituent of gun powder.
Carbon
Charcoal
Sulphur
Potassium nitrate
Q.12
Air used in aerobic fermentation must be sterilized, otherwise the
Recovery of product will be difficult
Contamination of pure culture would result
Uniformity of product cannot be achieved
None of these
Q.13
Main constituents of natural rubber is
Polystyrene
Polyisoprene
Polybutadiene
Polychloroprene
Q.14
The type of high refractive index glass used in optical instruments is __________ glass.
Pyrex
Flint
Crookes
None of these
Q.15
The major use of butadiene is
As a plasticiser for unsaturated polyester
In the manufacture of synthetic rubber
As an anti-skinning agent in paint
None of these
Q.16
The chamber process is
Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums
Non-catalytic and operates only on pyrites
A batch process for directly producing high strength (98 to 100%) H₂SO₄
None of these
Q.17
Transparent soaps (e.g. Pears) are
Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
Metallic soaps with frothing agent and free stearic acid to achieve transparency
Metallic soaps with frothing agent from which glycerine has not been recovered
None of these
Q.18
Most widely and commonly used coagulant for the removal of suspended impurities in water is
Bleaching powder
Slaked lime
Alum
Copper sulphate
Q.19
Soaps remove dirt by
Increasing the surface tension
Decreasing wettability
Supplying hydrophyllic group
None of these
Q.20
Which allotrope of sulphur is insoluble in carbon disulphide?
Rhombic sulphur
Monoclinic sulphur
Plastic sulphur
Milk of sulphur
Q.21
An alkali metal salt of palmitic acid is known as
Soap
Metallic soap
Detergent
Alkaloid
Q.22
Which form of sulphur is the most stable at room temperature?
Plastic
Monoclinic
Rhombic
Flowers of sulphur
Q.23
Raw materials used for producing __________ cement does not contain iron oxide.
Waterproof
Slag
White
Pozzolan
Q.24
Sucrose is a
Monosacchride
Disacchride
Polysacchride
None of these
Q.25
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
High cost
Fragile nature
Easy poisoning tendency
All of the above
Q.26
Silicon carbide is a/an
Adhesive
Abrasive
Type of glass
Brittle material
Q.27
Silicone is a/an
Thermoplastic
Inorganic polymer
Monomer
None of these
Q.28
Molecular weight of plastics ranges from
5000 to 10000
20000 to 250000
500 to 5000
106 to l09
Q.29
Which is a high grade pulp?
Rag pulp
Mechanical pulp
Sulphate pulp
Sulphite pulp
Q.30
Viscose rayon is chemically
Cellulose nitrate
Regenerated cellulose nitrate
Cellulose acetate
Regenerated cellulose acetate
Q.31
Vulcanisation of rubber
Decreases its tensile strength
Increases its ozone & oxygen reactivity
Increases its oil & solvent resistance
Converts its plasticity into elasticity
Q.32
Claude process of gas liquefaction employs
Merely compression of gas beyond its critical pressure
Joule-Thomson expansion cooling
Heat exchange with colder stream
Adiabatic expansion against a piston or in a turbine
Q.33
Linde process of gas liquefaction employs
Exchange of heat with colder stream
Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Adiabatic expansion against a piston or in a turbine
Merely compressing the gas beyond its critical pressure
Q.34
Solvent extracted oil
Has low free fatty acid content
Is odourless
Has more of unsaturates
None of these
Q.35
Pick out the wrong statement.
Strongly caking coal should not be used in the Lurgi gasifier
Acetylene gas can not be used for illumination purpose
Water gas is called blue gas because of the color of the flame, when it is burnt
Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Q.36
Pig iron is produced by blast furnaces in India using mostly the iron ore named
Hematite
Magnetite
Siderite
Chalcopyrite
Q.37
In multistage equilibrium conversion of SO₂ to SO₃ (2SO₂ + O₂ ⇋ 2SO₃), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO₂ to SO₃ can be increased by
Increasing the oxygen concentration
Putting more quantity of V₂O₅ catalyst in the converter
Removing some quantity of SO₃ during intermediate stage
Maintaining low temperature & pressure in the converter
Q.38
Higher vicosity index of a lubricating oil denotes
Less changes in fluidity of oil with temperature
Substantially high change in fluidity of oil with temperature
Its unsuitability under varying temperature conditions
None of these
Q.39
Acetone is produced by catalytic dehydrogenation of
Phenol
Naphthalene
Isopropanol
Ethyl benzene
Q.40
The biochemical treatment applied to sewage effluents is a process of
Dehydration
Reduction
Oxidation
Polymerisation
Q.41
Washing of coal is done to
Remove the inherent impurities
Remove the adhering impurities
Reduce the ash content
Both B and C
Q.42
Production of alcohol by fermentation of molasses is an __________ process.
Anaerobic
Aerobic
Endothermic
Both B and C
Q.43
Use of water having dissolved oxygen in boilers promotes
Corrosion
Sequestration
Scale formation
None of these
Q.44
Chrome tanning and vegetable tanning are done for
Light & heavy leather respectively
Heavy & light leather respectively
Both light & heavy leather
Neither light nor heavy leather
Q.45
Pure rectified spirit contains about __________ percent alcohol.
45
70
95
99.5
Q.46
Vanillin is a type of
Anti-pyretic drug
Food preservative
Flavour
Dye
Q.47
Sulphur addition in soap is done to
Improve the soap texture
Cure pimples & dandruff
Fasten lather formation
Increase its cleansing action
Q.48
Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.
SO₃
Cl₂
NH₃
SO₂
Q.49
Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate
Is prone to thermal decomposition
Has high water solubility and is unstable
Is soluble in ammonium chloride and potassium chloride solution
All of the above
Q.50
Which of the following is used as a binding material in soap to improve soap texture?
Rosin
Borax
Benzyl acetate
Sodium carbonate
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