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 2. If 100lb of black liquor containing 15lb of solids and 85lb of water is evaporated to 30lb; with a stream economy of … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Pulp Washing”. 1. Pulp washers are also known as ‘Black stock washers’. a) True b) False 2. Pulp washers use counter-current flow between stages such that the pulp moves opposite in direction to the flow of wash water. a) True b) … Read more
This set of Pulp and Paper Questions and Answers for Freshers focuses on “Other Methods of Pulping”. 1. Chemical puling and bleaching of chemical pulps both come under delignification reactions. a) True b) False 2. A variety of pretreatment processes applied to pulp lower the amount of bleaching chemicals required. a) True b) False 3. … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Sulfite Pulping”. 1. The sulfite pulping process is a full chemical pulping process, using mixtures of sulfurous acid and alkali salts. a) True b) False 2. Find the hidden term. 2H2+CaCO3andharr; Ca(HSO3)2+ __________ a) H2O and CO2 b) H2CO3 c) H2SO4 … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Kraft Pulping”. 1. Kraft pulping is a full chemical pulping method using sodium hydroxide and sodium sulfide at pH above 12. a) True b) False 2. Wood species is an important variable during Kraft cooking process. a) True b) False 3. … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Soda Pulping”. 1. Soda pulping was invented in which country? a) France b) England c) U.S.A d) Vietnam 2. Soda pulping uses sodium hydroxide as cooking chemical. a) True b) False 3. The soda process has limited use for easily pulped … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “General Chemical Pulping”. 1. What is the name of the process of breaking down the chemical structure of lignin and rendering it soluble in a liquid? a) Delignification b) Dissolving pulp c) Cross recovery d) Kraft green liquor semi-chemical process 2. … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Semi-Chemical Pulping”. 1. What is the name of the process where chips are impregnated with cooking liquor, the free liquor is drained or otherwise removed. a) Vapor-phase pulping b) Liquid-phase pulping c) Saturated-phase pulping d) Differential-phase pulping 2. What is the … Read more
This set of Pulp and Paper Interview Questions and Answers focuses on “Related Pulping Methods”. 1. The Asplund process was developed about 30 years prior to TMP. a) True b) False 2. Asplund process involves pre-steaming wood chips at temperature above the glass transition temperature of lignin. a) True b) False 3. What is the … Read more
This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Chemi-mechanical Pulping”. 1. Chemi-mechanical processes were originally named chemi-groundwood processes. a) True b) False 2. What is the full form of ESPRA? a) Empire state paper research association b) Entropy state pulp research association c) Enthalpy state paper research academy d) … Read more
