PPSC Chemistry Part VI Applied/Industrial Chemistry Online Test With Answers

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PPSC Chemistry Part VI Applied/Industrial Chemistry Online Test

Sr. # Questions Answers Choice
1 Alnico is an alloy containing how many percent nickel. 10% 14% 18% 22%
2 What is the minimum tensile strength of gray Cast Iron class 50 25000 ibf /in<sup>2</sup> 50000 ibf/in<sup>2</sup> 100000 ibf/in<sup>2</sup> 900000 ib/in<sup>2</sup>
3 The following alloys are the chief alloys that are die cast except. Zinc alloys Magnesium alloys Manganese alloys Nickel alloys
4 in the system of designating wrought aluminum alloys the letter F that follows the number indicates what condition of the alloy. As fabricated Calcined Annealed Strain hardened
5 In a system of designating wrought aluminum alloys. what does the second digit represents. The purity of aluminum The identity of the alloy The modification of the alloy group or impurity limits None of above
6 In a system of designating wrought aluminum alloys a sour digit number is used what does the first digit indicate. The purity of aluminum The identity of the alloy The alloy group All of above
7 The term 'brass' is very commonly used to designate any alloy primarily of. Copper and zinc Aluminum and iron Copper and aluminum Zinc and nickel
8 Manganese steel usually contains how many percent of manganese. 1 to 5 3 to 10 11 to 14 14 to 18
9 The chrome vanadium steels contain how many percent of vanadium. 0.15 to 0.30 0.05 to 0.15 0.30 to 0.45 0.45 to 0.60
10 The chrome molybdenum steels contain how many percent of molybdenum 0.10 0.20 0.30 0.40
11 The following are primary alloying ingredients of Group H steel except. Malybdenum Cobalt Chromium Tungsten
12 The group H steels can be used n what temperature range. 600<sup> o</sup>C to 1100 <sup>o</sup>C 1000 <sup>o</sup>C to 1500 <sup>o</sup>C 1100 <sup>o</sup>C to 2000 <sup>o</sup>C 200 <sup>o</sup>C to 800 <sup>o</sup>C
13 What is the approximate chromium range of a ferritic stainless steel. 12% to 18% 16% to 20% 20% to 24% 12% to 16%
14 What term is used to denote a family of thermosetting polymers that are reaction products of alcohols and acids.

 Alkaline Alkydes Alcocide Ketones
15 What is a process for making glass reinforced shapes that can be general by polling resin impregnated glass stands though a die. Continuous pultrusion<div><br></div> Bulk molding Vacuum bag forming Computational analysis
16 What is the effect of aluminum in cast iron. To increase hardness above 0.5 % To deoxidize molten cast iron To affect machinability, ductility and shrinkage depending on form Both A and B
17 What is the effect of manganese in cast iron. <sup>To affect the machinability ductility and shrinkage depending on form</sup> To reduce hardness by combining with sulfur below 0.5% and increase hardness above 0.55 To dioxide molten cast iron Have no effect
18 What is considered as the general purpose oldest type and widely used case iron. Grey iron Alloy iron Black iron Ductile iron
19 Which cast iron is hard and wear resistant. Grey iron White iron Melleable iron None of these
20 Which of the following cast iron is heat treated for ductility. Gray iron Malleable iron White iron None of these
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