565 + Mcqs in Chemical Process Page 2 McqOptions

51.	Carbon content of pitch (residue of coal tar distillation) is around __________ percent.%!
A.	70
B.	55
C.	80
D.	94
Answer» E.

Discussion

52.	Sodium bisulphite is used for __________ water.%!
A.	Deaeration
B.	Dechlorination
C.	Both A & B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

53.	Sugar content in sugarcane on cane basis is about __________ percent by weight.%!
A.	1 to 5
B.	5 to 10
C.	15 to 20
D.	20 to 30
Answer» C. 15 to 20

Discussion

54.	*$_Producer gas consists mainly of?
A.	CO, CO‚Äö√á√á N‚Äö√á√á, H‚Äö√á√á
B.	CO, H‚Äö√á√á
C.	H‚Äö√á√á, CH‚Äö√á√ë
D.	C‚Äö√á√áH‚Äö√á√á, CO‚Äö√á√á, H‚Äö√á√á
Answer» B. CO, H‚Äö√á√á

Discussion

55.	*$_Gun powder, which is an explosive comprises of charcoal, sulphur and?
A.	Glycerene
B.	Salt petre
C.	Nitro glycerene
D.	Dynamite
Answer» C. Nitro glycerene

Discussion

56.	*$_Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ ¬¨‚àûC.?
A.	15-30
B.	90-100
C.	250-300
D.	<0
Answer» B. 90-100

Discussion

57.	*$_Sucrose is a disaccharide consisting of?
A.	Glucose and glucose
B.	Glucose and fructose
C.	Glucose and galactose
D.	Fructose and galactose
Answer» C. Glucose and galactose

Discussion

58.	*$_Shaving soaps are?
A.	Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property
B.	Metalic soaps compounded with frothing agents
C.	High free alkali soaps having excess of cane sugar and alcohol
D.	None of these
Answer» B. Metalic soaps compounded with frothing agents

Discussion

59.	*$_A 'unit process' is exemplified by the?
A.	Distillation
B.	Hydrogenation of oils
C.	Absorption
D.	Humidification
Answer» C. Absorption

Discussion

60.	*$_Extraction of __________ employs an electrolytic process.?
A.	Aluminium
B.	Silver
C.	Copper
D.	All of the above
Answer» B. Silver

Discussion

61.	*$_Setting of plaster of paris is accompanied with?
A.	Hydration
B.	Dehydration
C.	Hydrolysis
D.	Loss of CO‚Äö√á√á
Answer» B. Dehydration

Discussion

62.	*$_Starting material for the production of styrene butadiene rubber (SBR) is?
A.	Ethyl alcohol
B.	Ethylene
C.	Both A & B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

63.	*$_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

64.	*$_Phenol is mainly used?
A.	To produce benzene
B.	To produce phenol formaldehyde
C.	To produce polyester resin
D.	As a plasticiser for unsaturated polyster
Answer» C. To produce polyester resin

Discussion

65.	*$_Pasteurisation of milk means?
A.	Removal of fatty and albuminous substance from it
B.	Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics
C.	Inhibiting the growth of micro-organisms without killing them
D.	None of these
Answer» C. Inhibiting the growth of micro-organisms without killing them

Discussion

66.	*$_Basic oxide is absent in __________ glass.?
A.	Flint
B.	Pyrex
C.	Quartz
D.	All of the above
Answer» D. All of the above

Discussion

67.	*$_The function of gypsum addition during cement making is to?
A.	Increase the density of cement
B.	Decrease the cement setting rate
C.	Both A and B
D.	Neither A nor B
Answer» C. Both A and B

Discussion

68.	*$_Sulphuric acid completely saturated with sulphur trioxide is called?
A.	Concentrated sulphuric acid
B.	Oleum
C.	Sulphurous acid
D.	Dilute sulphuric acid
Answer» B. Oleum

Discussion

69.	*$_Coagulant is used __________ filtration.?
A.	Before
B.	After
C.	During
D.	To avoid
Answer» B. After

Discussion

70.	*$_The yield of tar from high temperature carbonisation of dry coal is about __________ percent.?
A.	3
B.	12
C.	22
D.	0.3
Answer» B. 12

Discussion

71.	*$_Commonly used glass is known as the __________ glass.?
A.	Flint
B.	Hard
C.	Pyrex
D.	Soda
Answer» E.

Discussion

72.	*$_The compressive strength of cement should not be less than about 110Kg/cm¬¨‚â§ after three days & not less than 170Kg/cm¬¨‚â§ after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm¬¨‚â§/gm.?
A.	800
B.	1600
C.	4000
D.	8500
Answer» C. 4000

Discussion

73.	*$_Flux addition during smelting of ore is done to?
A.	Remove impurities/gangue
B.	Enhance rate of reaction
C.	Accelerate reduction of ore
D.	Separate slag from metal
Answer» B. Enhance rate of reaction

Discussion

74.	*$_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

75.	*$_Nicotine is?
A.	A volatile alkaloid
B.	Obtained by treating by-products of the tobacco processing industry
C.	Both A and B
D.	Neither A nor B
Answer» D. Neither A nor B

Discussion

76.	*$_Which of the following is the second major component of cement??
A.	Al‚Äö√á√áO‚Äö√á√â
B.	SiO‚Äö√á√á
C.	CaO
D.	Fe‚Äö√á√áO‚Äö√á√â
Answer» C. CaO

Discussion

77.	*$_Neon gas is?
A.	Flammable in nature
B.	Used in color discharge tube
C.	Filled in lamps having tungsten filament
D.	All of the above
Answer» C. Filled in lamps having tungsten filament

Discussion

78.	*$_During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160¬¨‚àûC, as?
A.	It is very corrosive at elevated temperature
B.	Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced)
C.	It decomposes on further increasing the temperature
D.	None of these
Answer» C. It decomposes on further increasing the temperature

Discussion

79.	*$_Cellulose percentage in bamboo fibre is about?
A.	10
B.	20
C.	50
D.	85
Answer» D. 85

Discussion

80.	*$_Nitrogen is an essential component of?
A.	Mineral salts
B.	Carbohydrates
C.	Fats
D.	Proteins
Answer» E.

Discussion

81.	*$_Na‚Äö√á√áCO‚Äö√á√â is called?
A.	Washing soda
B.	Soda ash
C.	Plaster of paris
D.	Calcite
Answer» C. Plaster of paris

Discussion

82.	*$_Oleum produces fumes of?
A.	SO‚Äö√á√á
B.	H‚Äö√á√áSO‚Äö√á√ë
C.	SO‚Äö√á√â
D.	SO‚Äö√á√á + H‚Äö√á√áSO‚Äö√á√ë
Answer» D. SO‚Äö√á√á + H‚Äö√á√áSO‚Äö√á√ë

Discussion

83.	*$_DDT should not be allowed to come in contact with iron (during its manufacture) to?
A.	Avoid its decomposition
B.	Prevent sulphonation of the monochlorobenzene by the acid catalyst
C.	Achieve non-hygroscopic property
D.	None of these
Answer» B. Prevent sulphonation of the monochlorobenzene by the acid catalyst

Discussion

84.	*$_Polymerisation product of C‚Äö√á√áF4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called?
A.	Polyurethane
B.	Silicone
C.	Teflon
D.	Epoxy resin
Answer» D. Epoxy resin

Discussion

85.	*$_In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the?
A.	Diamine and the ring
B.	Dibasic acid and the ring
C.	Diamine and the dibasic acid
D.	None of these
Answer» D. None of these

Discussion

86.	*$___________ acid is the main constituent of cotton seed oil.?
A.	Acetic
B.	Linoleic
C.	Palmitic
D.	Oleic
Answer» C. Palmitic

Discussion

87.	/_Which of the following is an endothermic reaction??
A.	Absorption of SO‚Äö√á√â in 98% H‚Äö√á√áSO‚Äö√á√ë
B.	C + H‚Äö√á√áO = CO + H‚Äö√á√á
C.	Thermal dissociation of iron pyrites
D.	Both B and C
Answer» E.

Discussion

88.	/_Frasch process is for?
A.	Making oxygen
B.	Producing helium
C.	Mining sulphur
D.	Making nitrogen
Answer» D. Making nitrogen

Discussion

89.	/_Vegetable oils and fats basically differ in their?
A.	Density ranges
B.	Physical state
C.	Chemical composition
D.	Chemical properties
Answer» C. Chemical composition

Discussion

90.	/_Which of the following is the purest form of water out of the following ??
A.	Underground water
B.	Rain water
C.	Well water
D.	Lake water
Answer» C. Well water

Discussion

91.	/_Phthalic anhydride is made by the?
A.	Oxidation of naphthalene
B.	Oxidation of benzene
C.	Dehydrogenation of ethyl benzene
D.	None of these
Answer» B. Oxidation of benzene

Discussion

92.	/_Gypsum is chemically?
A.	Calcium chloride
B.	Potassium sulphate
C.	Sodium sulphate
D.	Calcium sulphate
Answer» E.

Discussion

93.	/_Glauber's salt is chemically?
A.	Calcium sulphate
B.	Potassium sulphate
C.	Potassium chlorate
D.	None of these
Answer» E.

Discussion

94.	/_Concentration of hydrogen peroxide is done by?
A.	Crystallisation
B.	Vacuum crystallisation
C.	Atmospheric distillation
D.	Dehydration
Answer» C. Atmospheric distillation

Discussion

95.	/_SO‚Äö√á√á is bubbled through hot sugar cane juice to?
A.	Act as an acidifying agent
B.	Increase its concentration
C.	Increase the amount of molasses
D.	Increase the crystal size
Answer» B. Increase its concentration

Discussion

96.	/_Pencillin, an antibiotic drug was discovered by?
A.	Alexender
B.	Flaming
C.	Dr. Zivago
D.	None of these
Answer» B. Flaming

Discussion

97.	/_Which of the following is an explosive??
A.	Nitroglycerene
B.	Trintrotoluene (TNT)
C.	Cellulose nitrate
D.	All of the above
Answer» E.

Discussion

98.	/_Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene??
A.	AgO
B.	Al2O‚Äö√á√â
C.	ZnCl‚Äö√á√á
D.	FE‚Äö√á√áO‚Äö√á√â
Answer» B. Al2O‚Äö√á√â

Discussion

99.	/_Essential oils are usually obtained using?
A.	Steam distillation
B.	Extractive distillation
C.	Solvent extraction
D.	Leaching
Answer» E.

Discussion

100.	/___________ are added in lacquers to remove film brittleness and to improve adhereness.?
A.	Film forming materials
B.	Plasticisers
C.	Diluents
D.	Solvents
Answer» C. Diluents

Discussion

Explore topic-wise MCQs in Chemical Engineering.

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.%!

Sodium bisulphite is used for __________ water.%!

Sugar content in sugarcane on cane basis is about __________ percent by weight.%!

*$_Producer gas consists mainly of?

*$_Gun powder, which is an explosive comprises of charcoal, sulphur and?

*$_Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ ¬¨‚àûC.?

*$_Sucrose is a disaccharide consisting of?

*$_Shaving soaps are?

*$_A 'unit process' is exemplified by the?

*$_Extraction of __________ employs an electrolytic process.?

*$_Setting of plaster of paris is accompanied with?

*$_Starting material for the production of styrene butadiene rubber (SBR) is?

*$_Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by?

*$_Phenol is mainly used?

*$_Pasteurisation of milk means?

*$_Basic oxide is absent in __________ glass.?

*$_The function of gypsum addition during cement making is to?

*$_Sulphuric acid completely saturated with sulphur trioxide is called?

*$_Coagulant is used __________ filtration.?

*$_The yield of tar from high temperature carbonisation of dry coal is about __________ percent.?

*$_Commonly used glass is known as the __________ glass.?

*$_The compressive strength of cement should not be less than about 110Kg/cm¬¨‚â§ after three days & not less than 170Kg/cm¬¨‚â§ after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm¬¨‚â§/gm.?

*$_Flux addition during smelting of ore is done to?

*$_Widely used method for the conditioning of boiler feed water is the?

*$_Nicotine is?

*$_Which of the following is the second major component of cement??

*$_Neon gas is?

*$_During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160¬¨‚àûC, as?

*$_Cellulose percentage in bamboo fibre is about?

*$_Nitrogen is an essential component of?

*$_Na‚Äö√á√áCO‚Äö√á√â is called?

*$_Oleum produces fumes of?

*$_DDT should not be allowed to come in contact with iron (during its manufacture) to?

*$_Polymerisation product of C‚Äö√á√áF4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called?

*$_In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the?

*$___________ acid is the main constituent of cotton seed oil.?

*/*_Which of the following is an endothermic reaction??

*/*_Frasch process is for?

*/*_Vegetable oils and fats basically differ in their?

*/*_Which of the following is the purest form of water out of the following ??

*/*_Phthalic anhydride is made by the?

*/*_Gypsum is chemically?

*/*_Glauber's salt is chemically?

*/*_Concentration of hydrogen peroxide is done by?

*/*_SO‚Äö√á√á is bubbled through hot sugar cane juice to?

*/*_Pencillin, an antibiotic drug was discovered by?

*/*_Which of the following is an explosive??

*/*_Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene??

*/*_Essential oils are usually obtained using?

*/*___________ are added in lacquers to remove film brittleness and to improve adhereness.?

/_Which of the following is an endothermic reaction??

/_Frasch process is for?

/_Vegetable oils and fats basically differ in their?

/_Which of the following is the purest form of water out of the following ??

/_Phthalic anhydride is made by the?

/_Gypsum is chemically?

/_Glauber's salt is chemically?

/_Concentration of hydrogen peroxide is done by?

/_SO‚Äö√á√á is bubbled through hot sugar cane juice to?

/_Pencillin, an antibiotic drug was discovered by?

/_Which of the following is an explosive??

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

/_Essential oils are usually obtained using?

/___________ are added in lacquers to remove film brittleness and to improve adhereness.?