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