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