Materials and Construction Quiz 7
1 / 50
Spark plugs are made of________?
2 / 50
Reactor used in the production of polyvinyl chloride (PVC) is made of______?
3 / 50
Rubber lined vessels are corroded by the action of___________?
4 / 50
Stainless steel contains__________?
5 / 50
Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
6 / 50
Rotary driers are generally made of________?
7 / 50
Steel balls for ball bearings are generally made of _______ steel?
8 / 50
Rotary kilns in cement industry are lined with ______bricks?
9 / 50
Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)_____?
10 / 50
Silicon percentage in acid resistant cast iron is about_________?
11 / 50
Steel tower used for the storage of oleum_________?
12 / 50
Presence of manganese in alloy steel improves its_____?
13 / 50
Tempering of steel is done to make it_________?
14 / 50
SO3 is absorbed using H2SO4 in a______?
15 / 50
Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is ______ percent?
16 / 50
Slow plastic deformation of metals under a constant stress is termed as ______ failure?
17 / 50
Silicone rubber is not resistant to the corrosive action of______?
18 / 50
Soap kettle used in the production of laundry soap is made of______?
19 / 50
Refined acetic acid storage vessel are made of_____?
20 / 50
Rubber lined pumps can be used to pump__________?
21 / 50
Presence of 0.3 to 0.5% arsenic in copper increases its______?
22 / 50
Presence of high phosphorous in cast iron increases its______?
23 / 50
Teflon (PTFE) is corroded by________?
24 / 50
Shock resisting steels should possess high_____?
25 / 50
Residual magnetism in steel for magnets is increased by the addition of___________?
26 / 50
Presence of even very minute amount (say 0.1%) of _______ in copper, reduces its electrical conductivity very seriously?
27 / 50
Sulphuric acid pickling tanks are lined with___________?
28 / 50
Stainless steel is not corroded by _______?
29 / 50
Presence of nickel in steel improves its__________?
30 / 50
Presence of high amount of silicon in cast iron_________?
31 / 50
Sherardizing process is used for___________?
32 / 50
Slow and progressive deformation of a material with time under constant stress is called_____?
33 / 50
Silicon percentage in iron castings to have maximum hardness should be about___________?
34 / 50
Spark plugs, ignition tubes and electrodes are made of nickel _____ alloys?
35 / 50
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with___________?
36 / 50
Presence of cobalt in steel improves its______?
37 / 50
Presence of even 0.005% of ______ in copper makes it highly brittle, rendering it useless for wire-drawing?
38 / 50
Softness of silver can be converted into hardness by alloying it with small quantity of__________?
39 / 50
Reduction in the grain size reduces the ________ of the material?
40 / 50
Presence of nitrogen in steel_____?
41 / 50
Steel pipes are normally manufactured by _______ process?
42 / 50
Softening of hardened steel is done by its_______?
43 / 50
Presence of silicon in steel_______?
44 / 50
Tank furnace used for melting of glass is made of_____?
45 / 50
Spray dryer for evaporating milk to produce milk powder is made of__________?
46 / 50
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with_______?
47 / 50
Sulphur melting pit in the sulphuric acid plant is made of___________?
48 / 50
Purity of electrical grade aluminium should be ? ______ percent?
49 / 50
Specify the material of construction suitable for handling concentrated HNO3 at 100?C ?
50 / 50
Steel rods are used in reinforced concrete to increase its _______ strength?
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