565 + Mcqs in Chemical Process Page 1 McqOptions

1.	Zeigler process~!
A.	Produces high density polyethylene
B.	Produces low density polyethylene
C.	Uses no catalyst
D.	Employs very high pressure
Answer» B. Produces low density polyethylene

Discussion

2.	Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.%!
A.	CaO
B.	MnO‚Äö√á√á
C.	ZnO
D.	FeS
Answer» D. FeS

Discussion

3.	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/Al2O‚Äö√á√â; (ii) - Cu - ZnO/Al2O‚Äö√á√â
B.	(i) - Fe/Al2O‚Äö√á√â; (ii) - Cu - ZnO/Al2O‚Äö√á√â
C.	(i) - Ni/Al2O‚Äö√á√â; (ii) - Fe/Al2O‚Äö√á√â
D.	(i) - Fe/Al2O‚Äö√á√â; (ii) - Ni/Al2O‚Äö√á√â
Answer» D. (i) - Fe/Al2O‚Äö√á√â; (ii) - Ni/Al2O‚Äö√á√â

Discussion

4.	Comparing sulphate process with sulphite process, we find that __________ in the later.%!
A.	Both temperature & pressure in the former is less than that
B.	Both temperature & pressure in the former is more than that
C.	Temperature is more in the former whereas pressure is more
D.	Pressure is more in the former whereas temperature is less
Answer» C. Temperature is more in the former whereas pressure is more

Discussion

5.	Deaeration of water in its treatment is necessary, as it%!
A.	Minimises its turbidity
B.	Helps in controlling its taste and odour
C.	Minimises its corrosiveness
D.	None of these
Answer» D. None of these

Discussion

6.	The purpose of adding Na‚Äö√á√áCO‚Äö√á√â to water of low alkalinity is to%!
A.	Permit the use of alum as a coagulant
B.	Increase the softening capacity of zeolite
C.	Facilitate easy regeneration of zeolite
D.	All of the above
Answer» B. Increase the softening capacity of zeolite

Discussion

7.	Solvay process as compared to dual process (i.e. modified Solvay process)%!
A.	Can use low grade brine
B.	Has less corrosion problems
C.	Involves higher investment in NH‚Äö√á√â recovery units than that for crystallisation units for NH‚Äö√á√ëCl
D.	Both B and C
Answer» E.

Discussion

8.	Dense soda ash used in the manufacture of glass, is chemically represented by%!
A.	Na‚Äö√á√áCO‚Äö√á√â
B.	Na‚Äö√á√áCO‚Äö√á√â.10H‚Äö√á√áO
C.	Na‚Äö√á√áCO‚Äö√á√â.H‚Äö√á√áO
D.	Na‚Äö√á√áHCO‚Äö√á√â
Answer» D. Na‚Äö√á√áHCO‚Äö√á√â

Discussion

9.	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

10.	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

11.	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

12.	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

13.	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

14.	Chemical name of soda ash is%!
A.	Sodium bicarbonate
B.	Sodium thiosulphate
C.	Potassium carbonate
D.	None of these
Answer» E.

Discussion

15.	Hydrogenation of oil takes place in a/an __________ reactor.%!
A.	Autothermal
B.	Trickle bed
C.	Plug flow
D.	None of these
Answer» C. Plug flow

Discussion

16.	High temperature carbonisation of coal produces%!
A.	Inferior coke compared to low temperature carbonisation
B.	Less of gases compared to liquid products
C.	Larger quantity of tar compared to low temperature carbonisation
D.	None of these
Answer» E.

Discussion

17.	Styrene-butadiene-rubber (SBR) as compared to natural rubber has%!
A.	Poorer tensile strength
B.	Poorer resistance to oxidation
C.	Greater amount of heat build-up under heavy loading
D.	All of the above
Answer» E.

Discussion

18.	Coal tar is used as a%!
A.	Binding material for coal briquettes
B.	Fuel in rotary kiln
C.	Binder in making carbon electrodes
D.	All of the above
Answer» E.

Discussion

19.	Thorium is mainly used%!
A.	For the manufacture of gas mantles
B.	As a fissile fuel in a nuclear reactor
C.	In the manufacture of hydrogen bomb
D.	In the treatment of cancer
Answer» B. As a fissile fuel in a nuclear reactor

Discussion

20.	Synthetic glycerine is produced from%!
A.	Toluene
B.	Phenol
C.	Propylene
D.	Naphthalene
Answer» D. Naphthalene

Discussion

21.	Trinitro-toluene (TNT) is%!
A.	Used in glycerine manufacture
B.	An explosive
C.	Used in dye manufacture
D.	None of these
Answer» C. Used in dye manufacture

Discussion

22.	Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it%!
A.	Has larger production capacity per unit cell
B.	Consumes less power per ton of Cl‚Äö√á√á produced
C.	Produces high purity (70%) caustic soda directly
D.	All of the above
Answer» E.

Discussion

23.	Potassium is kept & transported under%!
A.	Water
B.	Liquid ammonia
C.	Kerosene oil
D.	Alcohol
Answer» D. Alcohol

Discussion

24.	Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate%!
A.	Is prone to thermal decomposition
B.	Has high water solubility and is unstable
C.	Is soluble in ammonium chloride and potassium chloride solution
D.	All of the above
Answer» D. All of the above

Discussion

25.	Which form of sulphur is the most stable at room temperature?%!
A.	Plastic
B.	Monoclinic
C.	Rhombic
D.	Flowers of sulphur
Answer» D. Flowers of sulphur

Discussion

26.	Raw materials used for producing __________ cement does not contain iron oxide.%!
A.	Waterproof
B.	Slag
C.	White
D.	Pozzolan
Answer» D. Pozzolan

Discussion

27.	Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like%!
A.	High cost
B.	Fragile nature
C.	Easy poisoning tendency
D.	All of the above
Answer» E.

Discussion

28.	Production of alcohol by fermentation of molasses is an __________ process.%!
A.	Anaerobic
B.	Aerobic
C.	Endothermic
D.	Both B and C
Answer» C. Endothermic

Discussion

29.	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

30.	The chamber process is%!
A.	Preferred over contact process for producing 98 to 100% H‚Äö√á√áSO‚Äö√á√ë and various oleums
B.	Non-catalytic and operates only on pyrites
C.	A batch process for directly producing high strength (98 to 100%) H‚Äö√á√áSO‚Äö√á√ë
D.	None of these
Answer» E.

Discussion

31.	In sulphate pulp manufacture, the pressure and temperature in the digestor is%!
A.	10 atm., 800 ¬¨‚àûC
B.	10 atm., 170-180¬¨‚àûC
C.	1 atm., 170 - 180¬¨‚àûC
D.	L atm., 800¬¨‚àûC
Answer» C. 1 atm., 170 - 180¬¨‚àûC

Discussion

32.	Yeast is used in the manufacture of%!
A.	Pencillin
B.	Antibiotics
C.	Wine
D.	Pasteurised milk
Answer» D. Pasteurised milk

Discussion

33.	Which of the following processes does not produce Cl‚Äö√á√á as a co-product during the manufacture of caustic soda?%!
A.	Diaphragm electrolytic cell process
B.	Mercury electrolytic cell process
C.	Lime-soda process
D.	None of these
Answer» D. None of these

Discussion

34.	Nickel is not used as a catalyst in the%!
A.	Fischer-Tropsch process
B.	Shift conversion
C.	Hydrogenation of oil
D.	Ostwald's process of HNO‚Äö√á√â manufacture
Answer» E.

Discussion

35.	Which of the following is not responsible for causing permanent hardness of water?%!
A.	Ca(HCO‚Äö√á√â)‚Äö√á√á
B.	CaCl‚Äö√á√á
C.	MgCl‚Äö√á√á
D.	None of these
Answer» B. CaCl‚Äö√á√á

Discussion

36.	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

37.	Commonly used glass is known as the __________ glass.%!
A.	Flint
B.	Hard
C.	Pyrex
D.	Soda
Answer» E.

Discussion

38.	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

39.	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

40.	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

41.	Basic oxide is absent in __________ glass.%!
A.	Flint
B.	Pyrex
C.	Quartz
D.	All of the above
Answer» D. All of the above

Discussion

42.	Coagulant is used __________ filtration.%!
A.	Before
B.	After
C.	During
D.	To avoid
Answer» B. After

Discussion

43.	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

44.	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

45.	Phenolic antiseptics are added in the __________ soap.%!
A.	Shaving
B.	Medicated
C.	Metallic
D.	Transparent
Answer» C. Metallic

Discussion

46.	__________ is produced using molasses as the starting raw material.%!
A.	Methyl alcohol
B.	Ethyl alcohol
C.	Benzol
D.	Dimethyl ether
Answer» C. Benzol

Discussion

47.	Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?%!
A.	Sodium silicate
B.	Sodium borate
C.	Sodium tripolyphosphate (STPP)
D.	Caustic soda
Answer» C. Sodium tripolyphosphate (STPP)

Discussion

48.	Which of the following contains least amount of N‚Äö√á√á?%!
A.	Coke oven gas
B.	Blast furnace gas
C.	Producer gas
D.	Water gas (blue gas)
Answer» B. Blast furnace gas

Discussion

49.	Dichloro diphenyl __________ is the full form of DDT (an insecticide).%!
A.	Tetrachloroethane
B.	Trichloroethane
C.	Tetrachloromethane
D.	Trichloromethane
Answer» C. Tetrachloromethane

Discussion

50.	Rotary kiln is not involved in the production of%!
A.	Cement
B.	Lime from limestone
C.	Slaked lime from quick lime
D.	None of these
Answer» D. None of these

Discussion

Explore topic-wise MCQs in Chemical Engineering.

Zeigler process~!

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.%!

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.%!

Comparing sulphate process with sulphite process, we find that __________ in the later.%!

Deaeration of water in its treatment is necessary, as it%!

The purpose of adding Na‚Äö√á√áCO‚Äö√á√â to water of low alkalinity is to%!

Solvay process as compared to dual process (i.e. modified Solvay process)%!

Dense soda ash used in the manufacture of glass, is chemically represented by%!

Shaving soaps are%!

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%!

Producer gas consists mainly of%!

Gun powder, which is an explosive comprises of charcoal, sulphur and%!

Chemical name of soda ash is%!

Hydrogenation of oil takes place in a/an __________ reactor.%!

High temperature carbonisation of coal produces%!

Styrene-butadiene-rubber (SBR) as compared to natural rubber has%!

Coal tar is used as a%!

Thorium is mainly used%!

Synthetic glycerine is produced from%!

Trinitro-toluene (TNT) is%!

Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it%!

Potassium is kept & transported under%!

Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate%!

Which form of sulphur is the most stable at room temperature?%!

Raw materials used for producing __________ cement does not contain iron oxide.%!

Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like%!

Production of alcohol by fermentation of molasses is an __________ process.%!

The major use of butadiene is%!

The chamber process is%!

In sulphate pulp manufacture, the pressure and temperature in the digestor is%!

Yeast is used in the manufacture of%!

Which of the following processes does not produce Cl‚Äö√á√á as a co-product during the manufacture of caustic soda?%!

Nickel is not used as a catalyst in the%!

Which of the following is not responsible for causing permanent hardness of water?%!

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

Commonly used glass is known as the __________ glass.%!

The yield of tar from high temperature carbonisation of dry coal is about __________ percent.%!

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.%!

The function of gypsum addition during cement making is to%!

Basic oxide is absent in __________ glass.%!

Coagulant is used __________ filtration.%!

Sulphuric acid completely saturated with sulphur trioxide is called%!

Flux addition during smelting of ore is done to%!

Phenolic antiseptics are added in the __________ soap.%!

__________ is produced using molasses as the starting raw material.%!

Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?%!

Which of the following contains least amount of N‚Äö√á√á?%!

Dichloro diphenyl __________ is the full form of DDT (an insecticide).%!

Rotary kiln is not involved in the production of%!

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.%!