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Pulp & Paper Multiple Choice Questions | MCQs | Quiz

Pulp & Paper Interview Questions and Answers
Practice Pulp & Paper questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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Wood - Basics & Bark
Wood - Chips & Sawdust
Wood - Chips Preparation
Wood - Solid Measurement
Wood - Chip Measurement
Wood - Chemistry
Wood - Fibre Physics
Wood - Nonwood
Wood - Moisture Content
Pulp - Basics
Pulp - Mechanical
Pulp - Chemi-mechanical
Pulp - Related Methods
Pulp - Semi-Chemical
Pulp - General Chemical
Pulp - Soda Pulping
Pulp - Kraft Pulping
Pulp - Sulfite Pulping
Pulp - Other Methods
Pulp - Pulp Washing
Pulp - Liquor Evaporation
Pulp - Boiler Recovery
Pulp - Causticizing Process
Pulp - Bleaching
Pulp - Mechanical Bleaching
Pulp - Lignin Measurement
Pulp - Chemical Bleaching
Pulp - Refining Basics
Pulp - Characterization
Paper - General Grades
Paper - Specific Types
Paper - Basic Properties
Paper - Physical Properties
Paper - Mechanical Properties
Paper - Chemical Analysis
Paper - Basic Optical Tests
Paper - Sheet Splitting
Paper - Fiber Penetration
Paper - Raw Materials
Paper - Functional Additives
Paper - Control Additives
Paper - Wet End Chemistry
Paper - Machines
Paper - Heatbox
Paper - Fourdrinier Wet End
Paper - Press Selection
Paper - Dryer Section
Paper - Post Dryer Operations
Paper - Coating
Fiber - Recycled Preparation
Fiber - Recycled Recovery
Fiber - Tensile Strength
Paper - Kraft Liquor
Paper - Sulphite Liquor
Paper - Sulphite Analysis
Paper - Chlorine Bleaching
Polymers - Basics
Polymers - Addition
Polymers - Condensation
Polymers - Molecular weight
Pulp - Nomenclature
Pulp - Monosaccharides
Pulp - Carbohydrates
Pulp - TQM & SPC
Pulp - Process Control
Pulp - Process Control Tools
Pulp - SPC Implemention
Pulp - Colloidal Chemistry
Pulp - Surface Tension
Paper - Surfactants
Paper - Foams
Paper - Polymeric Additives
Paper - Formation
Paper - Internal Sizing
Paper - Wet & Dry Strength
Paper - Control
Printing - Lithography
Printing - Gravure
Printing - Screen
Printing - Halftone
Printing - Color
Printing - Ink Applications
Printing - Bindery Operations
Paper - Properties & Printing
Paper - Light Rays Behavior
Paper - Tristimulus Systems
Paper - Blackbody Radiations
Paper - Kubelka-Munk Theory
Paper - Fiber Analysis
Paper - Softwood Fiber
Paper - Hardwood Fiber
Pumps - Basics
Pumps - Positive Displacment
Pumps - Centrifugal
Pumps - Valves
Hydraulic - Liquids Flow
Hydraulic - Power Systems
Sensors - Basics
Sensors - Temperature
Sensors - Mechanical

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Pulp & Paper Questions and Answers – Liquor Evaporation

Posted on May 19, 2017 by Manish

This set of Pulp and Paper Problems focuses on “Liquor Evaporation”.

1. What is the full form of M.E.E?
a) Multiple-effect evaporators
b) Molecular-energy evaporators
c) Multiple –entropy evaporators
d) Molecular-engineering evaporators
View Answer

Answer: a
Explanation: Multiple-effective evaporators are a series of series of 4 to 8 evaporators with indirect heating used for removing water from the dilute black liquor coming from the pulp washers.
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2. If 100lb of black liquor containing 15lb of solids and 85lb of water is evaporated to 30lb; with a stream economy of 5 it would take 14lb of steam to remove the 70lb of water. The steam economy is about 0.8 per effect. An overall steam economy of the system is ?
a) 9-10
b) 4-5
c) 20-25
d) 16-17
View Answer

Answer: b
Explanation: An overall steam economy of 4-5, depending on the number of effects, is normally good for mill operation. Stream economy just equals to the water mass evaporated by the mass of stream used.

3. Stream economy equals water mass evaporated by the mass of stream used.
a) True
b) False
View Answer

Answer: a
Explanation: Stream economy just equals water mass evaporated by the mass of stream used. The subsequent condensates are contaminated with volatile black liquor components and are usually allowed to the sewer.

4. What is the full form of L.T.V?
a) Long tube vertical
b) Less tube vertical
c) Leakage tube vent
d) Lombarda tube vent
View Answer

Answer: a
Explanation: Long tube vertical bodies. Each effect consists of a long tube vertical evaporator.
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5. Falling film evaporators are used in conventional evaporators except for the mechanism for evaporation in each stage is of different unit.
a) True
b) False
View Answer

Answer: a
Explanation: Falling film evaporators are used in conventional evaporators except for the mechanism for evaporation in each stage is of different unit.

6. About 65% of the methanol and BOD is concentrated in 6% of the entire condensate stream in the upper portion of the plates just to release __________
a) Four condensate segregation
b) Fine copper segregation
c) Foul condensate segregation
d) Free condensate segregation
View Answer

Answer: c
Explanation: About 65% of the methanol and B.O.D. is concentrated in 6% of entire condensate stream in the upper portion of the plates just to release foul condensate segregation. The remaining condensate is collected back from the overall portion of the plates which is suitable for brown stock washing.

7. Tall oil is a by-product mixture of the saponified fatty acids, resin acids and unsaponifiables which are derived from the wood extractives of ___________
a) Hardwood
b) Softwood
c) Turpentine
d) Lignin
View Answer

Answer: b
Explanation: Tall oil is a by-product mixture of saponified fatty acids, resin acids and unsaponifiables which are derived from the wood extractives of softwoods.
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8. ___________ is a mixture of volatile extractives collected during digester heating.
a) Kraft lignin
b) Tall oil
c) Wax
d) Turpentine
View Answer

Answer: d
Explanation: Turpentine is a mixture of volatile extractives collected during digester heating. It’s collected from the digester relief gases and solids for solvents and limited dis-infectants which are used in household pine oil cleaners.

9. ___________ is recovered by acidification and used dispersants, phenol-formaldehyde adhesive extenders, and binders in printing inks.
a) White liquor
b) Brown liquor
c) Black liquor
d) Green liquor
View Answer

Answer: c
Explanation: Black liquor is recovered by acidification and used dispersants, phenol-formaldehyde adhesive extenders, and binders for printing inks.

10. Indirect concentrators are forced circulation used to concentrate black liquor for the range where burkeite precipitates as scale. Where are they used?
a) Low-odour recovery boilers
b) High-odour recovery boilers
c) Constant-odour recovery boiler
d) Burst-odour recovery boiler
View Answer

Answer: a
Explanation: Indirect concentrators are forced circulation used to concentrate black liquor for the range where burkeite precipitates as scale. They are used in low-odour boilers.

Sanfoundry Global Education & Learning Series – Pulp and Paper.
To practice all areas of Pulp and Paper Problems, here is complete set of 1000+ Multiple Choice Questions and Answers.

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« Electrical Machines Questions and Answers – MMF Produced by Distributed Windings
Electrical Machines Questions and Answers – Excitation Systems for Synchronous Machines »
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Deep Dive @ Sanfoundry:

  1. Chemical Engineering Questions and Answers
  2. Pulp & Paper Questions and Answers
  3. Pulp & Paper Questions and Answers – Chemi-mechanical Pulping
  4. Pulp & Paper Questions and Answers – Sulphite Liquor Calculation
  5. Pulp & Paper Questions and Answers – Causticizing Process
  6. Pulp & Paper Questions and Answers – Recovery Boiler
  7. Pulp & Paper Questions and Answers – Semi-Chemical Pulping
  8. Pulp & Paper Questions and Answers – General Chemical Pulping
  9. Pulp & Paper Questions and Answers – Kraft Pulping
  10. Pulp & Paper Questions and Answers – Sulphite Liquor Analysis
Manish Bhojasia
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Facebook | Twitter

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