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Quiz 5
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Q.1
Ethyl alcohol cannot be produced
From waste sulphite substrate of paper mills
By esterification and hydroloysis of ethylene
From molasses
None of these
Q.2
Pencillin, an antibiotic drug was discovered by
Alexender
Flaming
Dr. Zivago
None of these
Q.3
Graphite is a/an
Electrical insulator
Allotrope of carbon
Moderator used in nuclear reactor
Both B and C
Q.4
Gun powder uses
Sulphur
Charcoal
Potassium nitrate
All of the above
Q.5
Very fine suspended and colloidal impurities are removed from water by a process called
Sedimentation
Coagulation
Disinfection
Softening
Q.6
Fumigant insecticides
Kill insects, when they eat it
Emit poisonous vapour
Are absorbed throughout the plant
None of these
Q.7
Which oil is preferred for paint manufacture?
Drying oil
Non-drying oil
Semi-drying oil
Saturated oil
Q.8
Which of the following is not a pyrite ore?
Celestite
Galena
Gypsum
Siderite
Q.9
High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
Flocculate the impurities
Facilitate fast filtration
Both A and B
Neither A nor B
Q.10
During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to
Increase the rate of absorption
Avoid corrosion
Reduce the cooling water circulation rate
None of these
Q.11
Starting raw material for the manufacture of maleic anhydride is
N-butene
Benzene
Either A or B
Neither A nor B
Q.12
Catalyst used during the manufacture of 'Vanaspati Ghee' is
Zinc
Nickel
Platinum
Copper
Q.13
SO₂ is bubbled through hot sugar cane juice to
Act as an acidifying agent
Increase its concentration
Increase the amount of molasses
Increase the crystal size
Q.14
Chalcopyrite is the main ore of
Copper
Lead
Tin
Iron
Q.15
Phthalic anhydride is made by the
Oxidation of naphthalene
Oxidation of benzene
Dehydrogenation of ethyl benzene
None of these
Q.16
Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
10
50
80
95
Q.17
Molecular weights of polymers are in the range of
10² - 10²
10⁵ - 10⁹
10² - 10⁷
10⁹ - 10¹¹
Q.18
Gypsum is chemically
Calcium chloride
Potassium sulphate
Sodium sulphate
Calcium sulphate
Q.19
Polymethyl methacrylate (PMMA) is known as
Bakelite
Teflon
Perspex
Nylon-6
Q.20
Temporary hardness of water can be removed by
Addition of alum (a coagulant)
Boiling
Filtration (through gravity sand filter)
Addition of lime
Q.21
Fusel oil is a/an
Essential oil
Extract from medicinal herbs
Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)
None of these
Q.22
Which of the following is a constituent of coffee?
Caffeine
Nicotine
Calgon
Lignin
Q.23
Which is the most efficient absorbant for SO₃ out of the following?
20% oleum
65% oleum
78%H₂SO₄
98%H₂SO₄
Q.24
Starting raw material for the manufacture of alum is
Alumina
Gypsum
Bauxite
Ammonium bicarbonate
Q.25
Glass is
Mainly CaO
Subjected to galvanising
A super cooled liquid
All of the above
Q.26
Glauber's salt is chemically
Calcium sulphate
Potassium sulphate
Potassium chlorate
None of these
Q.27
Fat splitting catalyst is
CaCO₃
ZnO
Al2O₃
Fe
Q.28
Fats as compared to oils have
More unsaturated glycerides of fatty acids
Less unsaturated glycerides of fatty acids
Much higher reactivity to oxygen
Lower melting point
Q.29
Which of the following is not required in the manufacture of soda ash by Solvay process?
Ammonia
Limestone
Nitric acid
None of these
Q.30
Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?
NH?
NaCl
CaO
Coke
Q.31
The process used for the manufacture of ethyl alcohol from molasses is
Distillation
Dehydration
Dehydrogenation
None of these
Q.32
Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
Q.33
Permanent hardness of water can be removed by
Simply boiling
Adding alum
Passing it through cation & anion exchangers
All of the above
Q.34
Permanent hardness of water can be removed by
Boiling
Adding Ca(OH)₂
Boiling it with Na₂CO₃
None of these
Q.35
Which of the following is an endothermic reaction?
Absorption of SO₃ in 98% H₂SO₄
C + H₂O = CO + H₂
Thermal dissociation of iron pyrites
Both B and C
Q.36
Frasch process is for
Making oxygen
Producing helium
Mining sulphur
Making nitrogen
Q.37
Electrodeposition of metals i.e. electroplating is never done on
Metals
Alloys
Refractories
Non-metals
Q.38
Margarine is a/an
Fat
Explosive
Plasticiser
Rocket propellant
Q.39
Massecuite is
Used for paper making
Used as a cattle feed
Highly acidic in nature
None of these
Q.40
Finely ground calcium aluminate & silicate is a/an
Cermet
Cement
Abrasive
Explosive
Q.41
Vegetable oils and fats basically differ in their
Density ranges
Physical state
Chemical composition
Chemical properties
Q.42
Which of the following is the purest form of water out of the following ?
Underground water
Rain water
Well water
Lake water
Q.43
Thermal pyrolysis of ethylene dichloride produces
Trichloroethylene
Vinyl chloride
Ethanol amine
Ethylene oxide
Q.44
Concentration of hydrogen peroxide is done by
Crystallisation
Vacuum crystallisation
Atmospheric distillation
Dehydration
Q.45
Permanent hardness of water can be removed by
Addition of soda ash to it
Treating it with zeolites
Passing it through sodium hexametaphosphate
All of the above
Q.46
Esterification reaction
Produces soap
Is reversible
Is a reaction between an alcohol and an organic acid
All of the above
Q.47
Low purity oxygen is used for
L.D. steel making
Cutting and welding of metals
Medicinal purposes
Chemical oxidation processes
Q.48
Which of the following is not a food additive?
Citric acid
Invertage
Benzoyl peroxide
Ammonium chloride
Q.49
Lithopaneis
Explosive
White lead
Filter aid
ZnS (white pigment)
Q.50
Which of the following is an yellow pigment?
Titanium dioxide
Ferrous sulphate
Lead chromates
Zinc sulphides
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