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KPSC Mock Test: Lecturer in Polymer Technology (Polytechnics) - Technical Education

KPSC Mock Test: Lecturer in Polymer Technology (Polytechnics) - Technical Education

Official Kerala Public Service Commission ONLINE Exam Question Paper & Answer Key. • Name of Post: Lecturer in Polymer Technology (Polytechnics) - Technical Education • Question Paper Code: 120/2023/OL • Date of Test: 21-07-2023 • Answer Key: Final Answer Key Question Paper PDF: https://www.keralapsc.gov.in/sites/default/files/2023-08/pky-120-23.pdf Answer Key PDF: https://www.keralapsc.gov.in/sites/default/files/2023-09/final_answer_key__lecturer_in_polymer_technology.pdf

93 Questions
Progress: 0 / 93 Answered
1
Apart from ageing resistance, anti oxidants may improve
2
Let AA, BB and XX be three matrices such that A=BXA = BX. If A=(24−13)A = \begin{pmatrix} 2 & 4 \\ -1 & 3 \end{pmatrix} and B=(1201)B = \begin{pmatrix} 1 & 2 \\ 0 & 1 \end{pmatrix}, then XX equals
3
If a+b+c=0a + b + c = 0, one root of ∣a−xcbcb−xaba−xc∣=0\begin{vmatrix} a-x & c & b \\ c & b-x & a \\ b & a-x & c \end{vmatrix} = 0 is
4
The term independent of xx in the expansion of (x−1x)10\left(x - \frac{1}{x}\right)^{10} is
5
The equation of the line that had yy intercept 44 and is perpendicular to 3x+2y=73x + 2y = 7 is
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If y=tan⁡−1(acos⁡x−bsin⁡xbcos⁡x+asin⁡x)y = \tan^{-1}\left(\frac{a\cos x - b\sin x}{b\cos x + a\sin x}\right), then the value of acos⁡2x+2sin⁡2xa\cos 2x + 2\sin 2x is
7
∫dxx(xn+1)\int \frac{dx}{x(x^n + 1)} is equal to
8
If y=px+qy = px + q is a tangent to the curve y=x2−xy = x^2 - x at (2,3)(2, 3), then (p,q)=(p, q) = ?
9
For the function f(x)=x3+3xf(x) = x^3 + 3x, the point
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The area of the region bounded by the curve y=sin⁡xy = \sin x and xx-axis is
11
The solution of the differential equation xdydx+y=x2x \frac{dy}{dx} + y = x^2 is
12
Two rubbers which are prepared by coordination polymerization are
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The following is not a delayed action accelerator
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A very convenient cure system for poly acrylate rubber is
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Banbury mixing is suitable for industries doing
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Natural rubber is
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Reclaimed rubber is useful because
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____________ polymer is suitable for blow moulding
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The life of an oil seal depends on _______ property
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For getting the faster cure rate in IIR
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CR is modified during polymerization to
22
The difficult in dispersing silica in diene rubbers is due to
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Payne effect is studied using
24
The first generation of solution SBR had
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A non polar rubber which can surpass NR in all aspects is
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Upside down mixing is done for
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For easy transport and handling, carbon black is
28
ZnO+Steatic acid causes
29
The excellent tackiness of NR is due to
30
The difficulty in dissolving cellulose in water, in spite of too many OH groups in it, is because of
31
If Tg of a polymer is close to ambient temperatures but melting point is high (i.e. more than 3/2 of its Tg), it means that the polymer is
32
The difficulty in getting a fluorocarbon rubber based on homopolymers is due to
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Which rubber is prepared from another polymer?
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A polymer which cannot be cross linked is
35
Chlorination of Natural rubber involves
36
When you get ethylene based rubbers, the resulting polymer gets a Tg above that of PE (assuming it to around -80C). This is because
37
High molecular weight in polymer chains lead to higher viscosity because of
38
Often, high temperature polymers will also be highly rigid because
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Among the following high temperature plastics _____________ has some crystallizing tendency
40
Peroxide cured EPDM compounds are not suitable for microwave curing because
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Inorganic blowing agents release
42
The rubber used in tyre innreliner
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Metal oxide crosslinking used in
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Flat spotting of the tyre occurs in
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Upside down mixing is associated with
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Neutral angle for hose manufacturing
47
Conveyor belt crosslinked by
48
Hildebrand is the unit of
49
Resilience is inversely related to
50
The major metal present in sludge removed from latex is
51
What is the use of Potassium oleate in natural rubber latex foam?
52
Which is used as an anti-coagulating agent
53
Which type of wheels is preferred for sports cars
54
What do the permissible of mixing cross ply and radial ply automibile tyres allow?
55
What is GRS?
56
Electrodeposition process related to which product?
57
Material used in tyre-cord adhesive is
58
Which of the following are examples of natural fibers?\n(i) Nylon\n(ii) Jute\n(iii) Polyester\n(iv) Sisal
59
What is the most widely used man-made fiber?
60
A common matrix material used in FRP is
61
The dispersed phase in common fiber reinforced plastic is
62
Melting point is the characteristics of
63
Dibutyl phalate, Tricresyl phosphate are all example of
64
Name a self-extinguishing thermoplastic material
65
Which one of the following materials is used for making CD?
66
High temperature, high performance polymeric materials are called ___________ polymers
67
Which one of the following is a natural polymer?
68
Phenol and formaldehyde molar ration for resol synthesis is ______________ under basic medium
69
One of the important joining techniques used for thermoplastic and will produce a permanently bonded and aesthetically pleasing joint
70
Which of the following could be made from HDPE
71
Processing temperature of PP for below moulding
72
For pipe application PVC is manufactured by _____________ polymerization
73
Natural polyol used for the production of polyurethane foam
74
Which of the following is amino plastic?
75
PPO can be used in steam autoclave because of its
76
A major disadvantage of mill mixing as compared to internal mixer is
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From the point of view of ingredients, the following physical changes occur during a mixing cycle
78
Increase in the rotor speed of an internal mixer will result in
79
To measure the stock temperature inside a Banbury mixer, the device used is
80
Crows feet is related to ____________ process
81
Frictioning in a calendar involves
82
To produce thick rubber sheeting, it is preferable to use
83
Continuous vulcanization of an extruded sponge profile can be done by
84
Which of the following curing technique has highest heat transfer coefficient?
85
The usual formula for calculation of tensile strength of rubber compound is
86
Troughability test is required in
87
_______ and _______ monomers are used in reactions injection molding process
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Aniline point testing method is used for
89
The most common standard conditioning atmosphere is
90
The crosshead speed/strain rate used to for tensile testing of brittle materials like polystyrene is
91
In HDT test, a deadweight load is applied at the center of the specimen which is sufficient to produce a maximum fiber stress of
92
____________ is used to measure the curing characteristics of the rubber compounds
93
Which property is more important for seals

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