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