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Chemistry Class 12 Chapter 15
Common Chemical Industries in Pakistan
Test 9
1.
Which of the following substance is used as filler or additive in paper making?
Glucose
Fructose
Cellulose
Starch
2.
Setting process of cement is based on?
Oxidation
None of these
Hydration
Hydrolysis
3.
Which substance is used to bleach the pulp?
Nalco
NaOH
ALL of these
NaCl
4.
Usually the %age of moisture in paper is?
6-8%
2-4%
1-3%
5-6%
5.
Calendar stock is process in paper making in which?
Paper thickness is removed
Moisture is removed
Pulp is spreaded over fabric or screen
None of these
6.
Cement is a mixture of so many compounds roasted in rotary klin?
None of these
Silica
Clay
Lime
7.
Which of he following is woody raw material used for making pulp and paper?
Cotton linter
Eucalyptus
Wheat straw
Bagasse
8.
Which is not calcareous material?
Lime
Marine shell
Marble
Clay
9.
What is clinker?
Roaster agrelarious material
Roasted calcareous and agrelarious material
Roasted gypsum
Roasted calcareous material
10.
Which process is pulp making is mostly used in Pakistan?
Kraft process
Sulphitr process
Neutral sulphite semi chemical process
All of these
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