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