a) True b) False Answer: a Explanation: The given statement is true. Groundwood pulp contains a considerable ...
View QuestionThe presteaming temperature for thermochemical pulping is _______
a) 110°C – 150°C b) 150°C – 200°C c) 200°C – 250°C d) 250°C – 300°C Answer: ...
View QuestionWhich of the following pulping processes was developed in 1950s?
a) Sulphite process b) Kraft process c) Refiner mechanical pulping process d) Screw pulping process Answer: c
View QuestionThe yield of chemical pulp is more than that of mechanical pulp.
a) True b) False Answer: b Explanation: The given statement is false. The yield of chemical ...
View Question________ pulp is produced by forcing wood against a rapidly revolving grindstone.
a) Grindwood b) Groundwood c) Pinewood d) Smashwood Answer: b Explanation: Groundwood pulp is produced by forcing ...
View QuestionIf ________ is present in paper, it deteriorates in color and strength quite rapidly.
a) Cellulose b) Lignin c) Hemicellulose d) Pectin Answer: b Explanation: If lignin is present in ...
View Question______ is the intercellular substance remaining in fiber pulp.
a) Cellulose b) Pectin c) Glucose d) Lignin Answer: d Explanation: Lignin is the intercellular substance remaining ...
View QuestionThe purpose of pulping is to separate the fibers.
a) True b) False Answer: a Explanation: The given statement is ...
View Question_______ softens at 160°C.
a) Pectin b) Hemicellulose c) Cellulose d) Lignin Answer: d Explanation: Lignin softens at 160°C. It ...
View Question______ is the natural binding constituent of the cells of wood and plant stalks.
a) Lignin b) Cellulose c) Hemicellulose d) Glucose Answer: a Explanation: Lignin is the natural binding constituent ...
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