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