This set of Pulp and Paper Multiple Choice Questions and Answers (MCQs) focuses on “Mechanical Properties of Paper”.
1. Paper tends to be stiffer and stronger in the machine direction than the cross machine direction.
a) True
b) False
View Answer
Explanation: Paper tends to be stiffer and stronger in the machine direction than the cross machine direction acc. to T.A.P.P.I. Standard T 409 lists methods for determining the machine direction of paper and paperboard.
2. The strength of wood and paper depends upon the rate of unloading.
a) True
b) False
View Answer
Explanation: The strength of wood and paper and any material depends on the rate of loading as quickly the force crucial a relatively large load can be supported for a short period of time.
3. The tensile index obtained by dividing the tensile strength by the basis weight and breaking length are alternate means of reporting __________ where the basis weight is normalized.
a) Tensile strength
b) Stress
c) Strain
d) Resistive force
View Answer
Explanation: The tensile index obtained by dividing the tensile strength by the basis weight and breaking length are alternate means of reporting tensile strength where the basis weight is normalized.
4. The __________ which is also called the Mullen strength, measures the value of hydrostatic pressure which crucial at a specified rate but required to rupture a piece of paper.
a) Mullen tester
b) Burst strength
c) Captative strength
d) Entity strength
View Answer
Explanation: The burst strength, which is also called the Mullen or pop strength, measures the value of hydrostatic pressure which is crucial at a particular rate.
5. What is the name of the hidden part?
___________=(g/cm2) / (g/m2)
a) Index
b) Factor
c) Burst
d) Ratio
View Answer
Explanation: The burst can be used in units of force divided by basis weight to give the burst factor.
6. What is the name of the hidden part?
___________=(psi) / (lb/ream)
a) Ratio
b) Factor
c) Burst
d) Index
View Answer
Explanation: The burst can also be calculated in units of pound per square inch divided by lb per ream to give the burst ratio.
7. What is the name of the hidden part?
___________ =(kPa) / (g/m2)
a) Ratio
b) Factor
c) Index
d) Burst
View Answer
Explanation: The burst may also be reported in units of pressure divided by volume to give the burst index.
8. The __________ of paper gives values same as that of ring crush tests. The results is co-rrelated with tensile and burst strengths of paper.
a) Ediwise compression strength
b) Edgewise comparative strength
c) Ediwise comparative strength
d) Edgewise compression strength
View Answer
Explanation: The short span compression or edgewise compression strength of paper gives values similar to those of ring crush tests. The results are co-rrelated with the tensile and burst strengths of paper. It’s very crucial in predicting how will a corrugated box will perform with a particular linerboard.
9. The __________ measures the energy required to propagate an initial tear through a lot of sheets of paper for a fixed distance.
a) Fold endurance
b) Abrasion factor
c) Internal tear resistance
d) Outer tear resistance
View Answer
Explanation: The internal tear resistance measures the energy required to propagate an initial tear through a lot of sheets of paper for a fixed distance. The value is used in g-cm/sheet.
10. The __________ is carried by rubbing the surface of paper with rotating wheel. The weight loss with time’s calculated.
a) Lincoln test
b) Carbon test
c) Sandpaper test
d) Abrasive test
View Answer
Explanation: The abrasion test is carried by rubbing the surface of paper with a rotating wheel. The weight loss with time’s calculated.
Sanfoundry Global Education & Learning Series – Pulp and Paper.
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