1. Due to __________ effect, a slightly higher E.M.C. would result if paper approached the E.M.C. for a given relative humidity and temperature, by releasing water.
a) Tyndall effect
b) Hysteresis effect
c) Intermolecular effect
d) Van der waal effect
Explanation: Due to hysteresis effect, a slightly higher E.M.C. would result if paper approached the E.M.C. for a given relative humidity and temperature, by releasing water.
2. It’s crucial to know the rate of __________ gain or loss of paper to achieve equilibrium in order to understand how long it takes to condition samples.
a) Lignin
b) Pulp
c) Moisture
d) Poison
Explanation: It is crucial to know the rate of moisture gain or loss of paper to achieve equilibrium in order to understand how long it takes to condition samples.
3. Paper should be placed in a hot, dry room (20-40°C or 68-105 °F, at 10-35% relative humidity) before placement in the __________
a) Pumping extractor room
b) Radiation room
c) Standard room
d) Recycle room
Explanation: It’s placed in the standard room, so that the moisture content of paper approaches its E.M.C. by adsorbing water from the atmosphere. E.M.C. stands for Equilibrium Moisture Content. Due to the hysteresis effect, a slightly higher E.M.C. will be observed if paper approached the E.M.C. for a given relative humidity and temperature, by giving off H2O.
4. __________ installed several of his early air conditioning units in textile and printing shops at the turn of this century because of controlling the relative humidity at the time of paper and textile processing.
a) Willis Carrier
b) John Carter
c) William Defoe
d) Willis Defoe
Explanation:Willis Carrier installed many of his early air conditioning units in textile and printing shops at the turn of this century for this exact same reason.
5. The __________ of today, manufactured from bleached kraft pulp, probably behaves somewhere in between kraft wrapping and sulfite derived __________
a) Fine papers
b) Bond papers
c) Greaseproof papers
d) Linerboard
Explanation: The bond paper of today, made from bleached kraft pulp, probably behaves somewhere in between kraft wrapping and sulfite derived bond paper. There’s no such thing as an average paper when it comes to moisture content and the changes in properties as a function of moisture content.
6. This paper uses concoated chemicals on the backside of one sheet that react with a chemical on the front of the adjacent sheet to give color. What is the type of paper?
a) Sulfurless paper
b) Carbonless paper
c) Hydrogenless paper
d) Oxygenless paper
Explanation: Carbonless paper was developed by the 3M company in the 1950s.
7. ____________ is the width of the paper on the machine.
a) Trim
b) Flight
c) Formation
d) Watermark
Explanation:Trim is the width of the paper on the machine. The web is usually trimmed 2 times, once at the couch roll by water squirts and once at the rewinder with circular knives.
8. ____________ is a term utilised to explain the uniformness of the sheet structure and orientation of the fibers.
a) Formation
b) Watermark
c) Deckle
d) Cockle
Explanation: Formation is a term utilised to explain the uniformness of the sheet structure and orientation of the fibers. Poor or wild formation means irregular distribution of fibers into the plane of the sheet, resulting in many thick and thin spots.
9. A ____________ is a pattern that is deliberately put on some bond papers which becomes visible by looking through the sheet as it is held up to light.
a) Formation
b) Curl
c) Watermark
d) Cockle
Explanation: A watermark’s a pattern that is intentionally put on some bond papers. It becomes visible by looking through the sheet as it’s held up to light.
10. The 2 edges of the paper web on the forming wire are called the ____________
a) Finish
b) Deckle
c) Curl
d) Watermark
Explanation:The 2 edges of the paper web on the forming wire are named the deckle which stands for un-trimmed paper with its original rough textured edges on the side.