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