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