a) 3%–5%. b) 1%–7%. c) 5%–7%. d) 6%–9%. Answer: c Explanation: The mixture of pulp (known as ...
View QuestionThe object of beating is _________ of the fibers by assisting them to imbibe water.
a) To increase the surface area b) To decrease the surface area c) To increase the volume d) ...
View QuestionThe separation of all the fibers from one another and their dispersion in water is called ________
a) Slushing b) Sheeting c) Wetting d) Mashing Answer: a Explanation: The separation of all the fibers ...
View Question__________ is the interface between the pulp mill and the papermaking process.
a) Stew preparation b) Stock preparation c) Dew preparation d) Stall preparation Answer: b Explanation: Stock preparation ...
View QuestionRecycled paper requires more chemicals and causes more harm to environment than new paper.
a) True b) False Answer: b Explanation: The given statement is false. Recycled paper uses lesser chemicals than ...
View Question________ is the mostly used chemical for bleaching of chemical pulp.
a) Sodium Hydroxide b) Potassium Iodide c) Hydrogen Peroxide d) Sodium Disulphite Answer: c Explanation: Hydrogen ...
View QuestionThe term ECF in chlorine bleaching stands for _________ bleaching.
a) Elemental chromium free b) Estimated chlorine free c) Essential chlorine free d) Elemental chlorine free Answer: ...
View QuestionThe term TCF in chlorine bleaching stands for_________bleaching.
a) Total chlorine free b) Total cadmium free c) Total chromium free d) Total calcium free Answer: ...
View QuestionThe residual lignin content in chemical pulp accounts for_______ of the mass.
a) 8%–9% b) 5%–8% c) 2%–5% d) 1%–2% Answer: c Explanation: The residual lignin content in chemical ...
View QuestionBleaching by hydrogen peroxide occurs at ____ °C for _____h.
a) 40°C, 2 h b) 60°C, 2.5 h c) 40°C, 3 h d) 10°C, 4 h Answer: ...
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