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