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