Refractory bricks burnt at very high temperature have got

less resistance to corrosion by slags.

greater resistance to corrosion by slags.

less resistance to corrosion by slags.

Fats as compared to oils have

much higher reactivity to oxygen.

more unsaturated glycerides of fatty acids.

less unsaturated glycerides of fatty acids.

much higher reactivity to oxygen.

Which of the following is not produced commercially from sea water ?

Magnesium & potassium compounds

Linde process of gas liquefaction employs

adiabatic expansion against a piston or in a turbine.

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.

The major use of butadiene is

as an anti-skinning agent in paint.

as a plasticiser for unsaturated polyester.

in the manufacture of synthetic rubber.

as an anti-skinning agent in paint.

Hydrocynic acid (HCN) is used as an insecticide for

controlling timber degradation by ants

In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst

gives higher conversion efficiency.

has a longer life and is not poisoned by arsenic.

handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant.

a by-product of BHC manufacture.

BHC (Benzene Hexa Chloride) containing 99% Œ≥-isomer.

a by-product of BHC manufacture.

increasing the surface tension.

Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by

its cryogenic separation from coke oven gas.

Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.

i - Ni/Al2O3; ii - Cu - ZnO/Al2O3

i - Fe/Al2O3; ii - Cu - ZnO/Al2O3

Contact process of sulphuric acid manufacture

yields acids of lower concentration than chamber process.

yields acid of higher concentration than chamber process.

yields acids of lower concentration than chamber process.

Reverse osmosis is normally used for the

separation of isotopes of uranium from gaseous uranium hexaflouride.

separation of helium from natural gas.

desalination of brackish water to produce potable (drinking) water.

Naphthalene is removed from coke oven gas by

passing it through electrostatic precipitator.

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

remove the coloring matter from the syrup.

reduce the viscosity of the syrup.

improve the rate of crystallisation of sugar.

Shrinkage volume in cement setting does not depend upon the

ambient temperature fluctuation.

595 + Mcqs in Chemical Process in Chemical Engineering Page 2 McqOptions

51.	Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?
A.	AgO
B.	Al2O3
C.	ZnCl2
D.	Fe2O3
Answer» B. Al2O3

Discussion

52.	The ideal pulp for the manufacture of paper should have high __________ content.
A.	cellulose
B.	lignin
C.	both (a) & (b)
D.	none of these
Answer» B. lignin

Discussion

53.	Refractory bricks burnt at very high temperature have got
A.	greater resistance to corrosion by slags.
B.	less resistance to corrosion by slags.
C.	high spalling tendency.
D.	none of these.
Answer» B. less resistance to corrosion by slags.

Discussion

54.	A mixture of chlorine & sodium bromide acts as a/an
A.	insecticides
B.	analgesic drug
C.	fire retardant
D.	hydrogenation catalyst
Answer» D. hydrogenation catalyst

Discussion

55.	Bakelite is chemically known as
A.	polyvinyl chloride (PVC)
B.	polybutadiene
C.	phenol formaldehyde
D.	polyurathane
Answer» D. polyurathane

Discussion

56.	Fats as compared to oils have
A.	more unsaturated glycerides of fatty acids.
B.	less unsaturated glycerides of fatty acids.
C.	much higher reactivity to oxygen.
D.	lower melting point.
Answer» C. much higher reactivity to oxygen.

Discussion

57.	Chemical name of 'alum' is
A.	barium sulphate.
B.	aluminium sulphate.
C.	aluminium chloride.
D.	calcium sulphate.
Answer» C. aluminium chloride.

Discussion

58.	Which of the following is not produced commercially from sea water ?
A.	Magnesium & potassium compounds
B.	Common salt
C.	Bromine
D.	Iodine
Answer» E.

Discussion

59.	L.D. converter is used in the production of
A.	pig iron
B.	steel
C.	copper
D.	zinc
Answer» C. copper

Discussion

60.	Linde process of gas liquefaction employs
A.	exchange of heat with colder stream.
B.	adiabatic expansion through a throttle valve (Joule-Thomson expansion).
C.	adiabatic expansion against a piston or in a turbine.
D.	merely compressing the gas beyond its critical pressure.
Answer» C. adiabatic expansion against a piston or in a turbine.

Discussion

61.	Sodium chloride content in sea water is about __________ gms/litre.
A.	2
B.	10
C.	25
D.	50
Answer» D. 50

Discussion

62.	'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
A.	final rolling out of paper.
B.	cutting of fibres.
C.	hydration of fibres.
D.	fibrillation of fibre.
Answer» B. cutting of fibres.

Discussion

63.	Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?
A.	Oxidation of Na+ ions
B.	Oxidation of Cl- ions
C.	Reduction of Na+ ions
D.	Reduction of Cl- ions
Answer» C. Reduction of Na+ ions

Discussion

64.	The major use of butadiene is
A.	as a plasticiser for unsaturated polyester.
B.	in the manufacture of synthetic rubber.
C.	as an anti-skinning agent in paint.
D.	none of these.
Answer» C. as an anti-skinning agent in paint.

Discussion

65.	__________ is the major constituent of the Portland cement.
A.	Calcium carbonate
B.	Calcium oxide
C.	Tricalcium silicate
D.	Calcium sulphate
Answer» D. Calcium sulphate

Discussion

66.	Massecuite is
A.	used for paper making.
B.	used as a cattle feed.
C.	highly acidic in nature.
D.	none of these.
Answer» E.

Discussion

67.	90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ ¬∞C.$
A.	<0
B.	11232
C.	250-280
D.	500-600
Answer» C. 250-280

Discussion

68.	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.
A.	drying
B.	semi-drying
C.	non-drying
D.	none of these
Answer» D. none of these

Discussion

69.	Cement mainly contains
A.	CaO, SiO2, Al2O3
B.	MgO, SiO2, K2O
C.	Al2O3, MgO, Fe2O3
D.	CaO, MgO, K2O
Answer» B. MgO, SiO2, K2O

Discussion

70.	Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of
A.	carbon
B.	arsenic
C.	lead
D.	sulphur
Answer» C. lead

Discussion

71.	Ore concentration by froth floatation utilises the __________ of ore particles.
A.	density difference
B.	wetting characteristics
C.	terminal velocities
D.	none of these
Answer» C. terminal velocities

Discussion

72.	Hydrocynic acid (HCN) is used as an insecticide for
A.	controlling timber degradation by ants
B.	controlling poultry lice
C.	potato beetle
D.	citrus fruits
Answer» E.

Discussion

73.	In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst
A.	gives higher conversion efficiency.
B.	has a longer life and is not poisoned by arsenic.
C.	handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant.
D.	all (a), (b) and (c).
Answer» E.

Discussion

74.	Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
A.	coke and sand
B.	brine and coal
C.	coke and caustic soda
D.	none of these
Answer» C. coke and caustic soda

Discussion

75.	Glass is
A.	mainly CaO
B.	subjected to galvanising
C.	a super cooled liquid
D.	all (a), (b) and (c)
Answer» D. all (a), (b) and (c)

Discussion

76.	Concentration of hydrogen peroxide is done by
A.	crystallisation
B.	vacuum crystallisation
C.	atmospheric distillation
D.	dehydration
Answer» C. atmospheric distillation

Discussion

77.	Good quality of edible salt is obtained from brine by the process of
A.	solar evaporation
B.	vacuum evaporation
C.	freeze drying
D.	electrolysis
Answer» C. freeze drying

Discussion

78.	Coke used for the production of calcium carbide should have
A.	low ash content.
B.	low ignition temperature.
C.	high electrical resistivity.
D.	all (a), (b) and (c).
Answer» E.

Discussion

79.	Lindane is
A.	not a fumigant.
B.	BHC (Benzene Hexa Chloride) containing 99% Œ≥-isomer.
C.	a by-product of BHC manufacture.
D.	both(b) and (c).
Answer» C. a by-product of BHC manufacture.

Discussion

80.	Soaps remove dirt by
A.	increasing the surface tension.
B.	decreasing wettability.
C.	supplying hydrophyllic group.
D.	none of these.
Answer» E.

Discussion

81.	Mannheim furnace is used in the manufacture of
A.	hydrochloric acid.
B.	H2SO4 by Chamber process.
C.	calcium carbide.
D.	corundum.
Answer» B. H2SO4 by Chamber process.

Discussion

82.	With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide
A.	increases
B.	increases linearly
C.	decreases
D.	decreases linearly
Answer» D. decreases linearly

Discussion

83.	Catalytic oxidation of toluene produces
A.	styrene
B.	phenol
C.	benzene
D.	tri-nitro-toluene
Answer» C. benzene

Discussion

84.	Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by
A.	iron-steam reaction.
B.	electrolysis of water.
C.	steam reforming of naphtha.
D.	its cryogenic separation from coke oven gas.
Answer» B. electrolysis of water.

Discussion

85.	Widely used method for the conditioning of boiler feed water is the
A.	cold lime process
B.	coagulation
C.	hot-lime soda process
D.	sequestration
Answer» D. sequestration

Discussion

86.	Major component of flint glass is
A.	lead oxide
B.	silica
C.	alumina
D.	soda
Answer» B. silica

Discussion

87.	Alkylbenzene sulfonate (ABS) is a
A.	detergent
B.	rubber
C.	pesticide
D.	polyester
Answer» B. rubber

Discussion

88.	Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.
A.	i - Ni/Al2O3; ii - Cu - ZnO/Al2O3
B.	i - Fe/Al2O3; ii - Cu - ZnO/Al2O3
C.	i - Ni/Al2O3; ii - Fe/Al2O3
D.	i - Fe/Al2O3; ii - Ni/Al2O3
Answer» D. i - Fe/Al2O3; ii - Ni/Al2O3

Discussion

89.	The basic difference between vegetable oils and fats is in their
A.	density
B.	chemical properties
C.	physical state
D.	composition
Answer» D. composition

Discussion

90.	Contact process of sulphuric acid manufacture
A.	yields acid of higher concentration than chamber process.
B.	yields acids of lower concentration than chamber process.
C.	is obsolete.
D.	eliminates absorber.
Answer» B. yields acids of lower concentration than chamber process.

Discussion

91.	Prussian blue is chemically represented by
A.	FeO.TiO2
B.	Ca SO4 . 2H2O
C.	Fe4 [Fe (CN6)3]
D.	AlF3 . 3NaF
Answer» D. AlF3 . 3NaF

Discussion

92.	__________ is an ore of lead.
A.	Quartz
B.	Galena
C.	Siderite
D.	Chalcopyrite
Answer» C. Siderite

Discussion

93.	Reverse osmosis is normally used for the
A.	separation of isotopes of uranium from gaseous uranium hexaflouride.
B.	separation of helium from natural gas.
C.	desalination of brackish water to produce potable (drinking) water.
D.	purification of oxygen.
Answer» D. purification of oxygen.

Discussion

94.	Naphthalene is removed from coke oven gas by
A.	adsorbing on palladium.
B.	absorbing in ethanolamine.
C.	scrubbing with wash oil.
D.	passing it through electrostatic precipitator.
Answer» D. passing it through electrostatic precipitator.

Discussion

95.	Reaction of calcium carbide with water produces a gas, which is used
A.	as an illuminant.
B.	for metal cutting/welding.
C.	both (a) & (b).
D.	neither (a) nor (b).
Answer» D. neither (a) nor (b).

Discussion

96.	Hydrophilic group of a soap or detergent solution is
A.	water hating
B.	soil loving
C.	water loving
D.	none of these
Answer» D. none of these

Discussion

97.	Ethanol amine is produced using ammonia and
A.	ethyl benzene
B.	ethylene oxide
C.	ethanol
D.	ethane
Answer» C. ethanol

Discussion

98.	One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to
A.	adjust the pH of the syrup.
B.	remove the coloring matter from the syrup.
C.	reduce the viscosity of the syrup.
D.	improve the rate of crystallisation of sugar.
Answer» B. remove the coloring matter from the syrup.

Discussion

99.	Shrinkage volume in cement setting does not depend upon the
A.	sand to cement ratio.
B.	water to cement ratio.
C.	ambient temperature fluctuation.
D.	drying period.
Answer» B. water to cement ratio.

Discussion

100.	More than 100 percent of __________ is present in oleum.
A.	SO3
B.	H2SO4
C.	H2SO3
D.	SO2
Answer» C. H2SO3

Discussion

Explore topic-wise MCQs in Chemical Engineering.

Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?

The ideal pulp for the manufacture of paper should have high __________ content.

Refractory bricks burnt at very high temperature have got

A mixture of chlorine & sodium bromide acts as a/an

Bakelite is chemically known as

Fats as compared to oils have

Chemical name of 'alum' is

Which of the following is not produced commercially from sea water ?

L.D. converter is used in the production of

Linde process of gas liquefaction employs

Sodium chloride content in sea water is about __________ gms/litre.

'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

The major use of butadiene is

__________ is the major constituent of the Portland cement.

Massecuite is

90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ ¬∞C.$

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.

Cement mainly contains

Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

Ore concentration by froth floatation utilises the __________ of ore particles.

Hydrocynic acid (HCN) is used as an insecticide for

In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst

Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.

Glass is

Concentration of hydrogen peroxide is done by

Good quality of edible salt is obtained from brine by the process of

Coke used for the production of calcium carbide should have

Lindane is

Soaps remove dirt by

Mannheim furnace is used in the manufacture of

With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide

Catalytic oxidation of toluene produces

Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by

Widely used method for the conditioning of boiler feed water is the

Major component of flint glass is

Alkylbenzene sulfonate (ABS) is a

Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.

The basic difference between vegetable oils and fats is in their

Contact process of sulphuric acid manufacture

Prussian blue is chemically represented by

__________ is an ore of lead.

Reverse osmosis is normally used for the

Naphthalene is removed from coke oven gas by

Reaction of calcium carbide with water produces a gas, which is used

Hydrophilic group of a soap or detergent solution is

Ethanol amine is produced using ammonia and

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Shrinkage volume in cement setting does not depend upon the

More than 100 percent of __________ is present in oleum.

Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) for steam reforming of methane and (ii) for ammonia synthesis.