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