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