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