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