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