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